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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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hard or soft waste wood on faceplate?
i'm turning green maple and cherry into bowls and using a faceplate with
waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? rich -- atv rider polaris 500 glass creations drz400s wood carver spode |
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"res055a5" wrote in message news:rtgDd.26152$rL3.3824@trnddc03... i'm turning green maple and cherry into bowls and using a faceplate with waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? rich -- atv rider polaris 500 glass creations drz400s wood carver spode It definitely won't hold as well as hardwood; the screw threads are where most trouble occurs IMO. However, where you are using the glue/paper trick on wet wood the weak link may not be the soft wood if you use good size screws and as many as you can. Billh |
#3
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Softwood and ring-porous hardwoods will split along annual rings more easily
than diffuse-porous hardwoods. True poplars, soft maple are great choices. "res055a5" wrote in message news:rtgDd.26152$rL3.3824@trnddc03... i'm turning green maple and cherry into bowls and using a faceplate with waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? rich |
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I've even used three/quarter inch plywood, plus good screws and lots of them
are suggested. To add suspenders to that "belt" you might consider gluing it also! Leif "res055a5" wrote in message news:rtgDd.26152$rL3.3824@trnddc03... i'm turning green maple and cherry into bowls and using a faceplate with waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? rich -- atv rider polaris 500 glass creations drz400s wood carver spode |
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I've even used three/quarter inch plywood, plus good screws and lots of them
are suggested. To add suspenders to that "belt" you might consider gluing it also! Leif "res055a5" wrote in message news:rtgDd.26152$rL3.3824@trnddc03... i'm turning green maple and cherry into bowls and using a faceplate with waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? rich -- atv rider polaris 500 glass creations drz400s wood carver spode |
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On Thu, 06 Jan 2005 19:39:03 GMT, "res055a5" wrote:
i'm turning green maple and cherry into bowls and using a faceplate with waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? I _have_ had tulip poplar waste wood break, but this is the softest wood I've ever used as waste wood. Right now I've got a hunk of purpleheart on there as waste wood. That one seems to work pretty well. : ) -- Chuck *#:^) chaz3913(AT)yahoo(DOT)com Anti-spam sig: please remove "NO SPAM" from e-mail address to reply. September 11, 2001 - Never Forget |
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On Thu, 06 Jan 2005 19:39:03 GMT, "res055a5" wrote:
i'm turning green maple and cherry into bowls and using a faceplate with waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? rich I'm FAR from an expert, and I'm sure others here will tell me why it's wrong.. *g* I use soft pine, an inch larger than the faceplate diameter, so I can cut it along with whatever is glued to the other side of the paper.. (I'm cheap, so when they say "paper or plastic, I ask for paper once in a while) I bolt the pine to the faceplate using countersunk 1/4 bolts with lock washers and nuts behind the faceplate.. I cut the rounds oversize with a jig saw, drill & bolt 'em, then turn them round and glue the paper over it.. mac Please remove splinters before emailing |
#8
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Mac there is no wrong way or right way if it works for you But I use good wood screws, in my face plate, if my screws don't strip out then I'm not afraid that the wood will come off, now the glue joint is another question, and I rarely use glued on bowl blanks, I normally cut the outside form then use the stronghold chuck to hold it and hollow the inside. Have fun and take care Leo Van Der Loo mac davis wrote: On Thu, 06 Jan 2005 19:39:03 GMT, "res055a5" wrote: i'm turning green maple and cherry into bowls and using a faceplate with waste wood/glue/paper/glue/bowl blank. i've been told not to use soft waste wood because it won't hold as well. fact or fiction? rich I'm FAR from an expert, and I'm sure others here will tell me why it's wrong.. *g* I use soft pine, an inch larger than the faceplate diameter, so I can cut it along with whatever is glued to the other side of the paper.. (I'm cheap, so when they say "paper or plastic, I ask for paper once in a while) I bolt the pine to the faceplate using countersunk 1/4 bolts with lock washers and nuts behind the faceplate.. I cut the rounds oversize with a jig saw, drill & bolt 'em, then turn them round and glue the paper over it.. mac Please remove splinters before emailing |
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On Fri, 07 Jan 2005 02:06:40 -0500, Leo Van Der Loo
wrote: Mac there is no wrong way or right way if it works for you But I use good wood screws, in my face plate, if my screws don't strip out then I'm not afraid that the wood will come off, now the glue joint is another question, and I rarely use glued on bowl blanks, I normally cut the outside form then use the stronghold chuck to hold it and hollow the inside. Have fun and take care Leo Van Der Loo ok Leo.. here's an area I'm having trouble with... I'm trying to get away from faceplate turning, to avoid the wasted wood.. (hoping to get into some more exotic wood than firewood) I've been experimenting with roughing out the bowls between centers and leaving them with either a base or tenon for the chuck, so I can do the rest of the turning with the Talon.. My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... H E L P ! ! mac Please remove splinters before emailing |
#10
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"mac davis" wrote in message ... On Fri, 07 Jan 2005 02:06:40 -0500, Leo Van Der Loo wrote: Mac there is no wrong way or right way if it works for you But I use good wood screws, in my face plate, if my screws don't strip out then I'm not afraid that the wood will come off, now the glue joint is another question, and I rarely use glued on bowl blanks, I normally cut the outside form then use the stronghold chuck to hold it and hollow the inside. Have fun and take care Leo Van Der Loo ok Leo.. here's an area I'm having trouble with... I'm trying to get away from faceplate turning, to avoid the wasted wood.. (hoping to get into some more exotic wood than firewood) I've been experimenting with roughing out the bowls between centers and leaving them with either a base or tenon for the chuck, so I can do the rest of the turning with the Talon.. My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... H E L P ! ! mac Please remove splinters before emailing Mac, Does the chuck run true when it is mounted on the spindle? When you first chuck the bowl it should be fairly true but perhaps not perfect. This is not a big deal since all you have to do is a light cut on the outer surface of the bowl to get it true with the chucking. Don't worry if the top of the bowl is not necessarily perpendicular to the bed of the lathe since that will be quickly trued up as you continue shaping and hollowing the bowl. When you chuck the bowl in your talon make sure the front face of the jaws butts against the bottom of the bowl where it meets the tenon. The bottom of the tenon does not rest against the bottom of the jaws where they fasten to the chuck body. I always make sure I have a small flat surface about 1/4" wide where the tenon and the bottom of the bowl meets to provide good registration with the jaws. billh |
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Right now I've got a hunk of
purpleheart on there as waste wood. That one seems to work pretty well. : ) and you use ebony sticks as kindling in your fireplace? rich |
#12
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I like to use hard wood for a glue bock and then hot glue to hold on the
blank. -- God bless and safe turning Darrell Feltmate Truro, NS Canada www.aroundthewoods.com |
#13
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When I rough turn I make a tenon at the base of the green wood blanks
The problem is once the blanks is dry the tenon becomes oval. I have not yet found an ideal way to true the tenon before placing it in the chuck for finishing. "mac davis" wrote in message ... On Fri, 07 Jan 2005 02:06:40 -0500, Leo Van Der Loo wrote: Mac there is no wrong way or right way if it works for you But I use good wood screws, in my face plate, if my screws don't strip out then I'm not afraid that the wood will come off, now the glue joint is another question, and I rarely use glued on bowl blanks, I normally cut the outside form then use the stronghold chuck to hold it and hollow the inside. Have fun and take care Leo Van Der Loo ok Leo.. here's an area I'm having trouble with... I'm trying to get away from faceplate turning, to avoid the wasted wood.. (hoping to get into some more exotic wood than firewood) I've been experimenting with roughing out the bowls between centers and leaving them with either a base or tenon for the chuck, so I can do the rest of the turning with the Talon.. My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... H E L P ! ! mac Please remove splinters before emailing |
#14
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When I rough turn I make a tenon at the base of the green wood blanks
The problem is once the blanks is dry the tenon becomes oval. I have not yet found an ideal way to true the tenon before placing it in the chuck for finishing. Dennis, Get a copy of Bill Grumbine's video on turning bowls. He addresses and demonstrates a very simple solution to that problem. Bill's address is: http://www.enter.net/~ultradad/ The disk or tape is well worth the cost. |
#15
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"Denis Marier" wrote in message
... When I rough turn I make a tenon at the base of the green wood blanks The problem is once the blanks is dry the tenon becomes oval. I have not yet found an ideal way to true the tenon before placing it in the chuck for finishing. I sure like the pin chuck/jaws method. Puts it right back between centers once it's dry. Though if you make centers before you set it aside to dry, they'll be pretty close to where they were when time comes to reset, even if you're using a cone or such. Don't think you have to do the entire turn from a single mount, and all kinds of methods will suggest themselves. Take a look at spindle turning a bowl http://personalpages.tds.net/~upgeorge/index.html |
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Hi Mac
Yes I know what you are talking about, the way I deal with it is like this, I make sure that the face around the tenon or inside the recess, is flat and clean and square, (I use a sharp scraper for that, NO sanding) then place the work piece on the chuck and pushing in the center ( in line with the spindle ) while tightening the chuck, I do NOT squeeze the living daylight out of the wood, ( wood will distort differed depending the grain of the wood )(face grain end grain knot etc. ) now I will give the wood a quick spin, with my tool rest close so I am able to see how much if any, the work piece is running out, if its out more than I like, I will find the place where the side of the piece is farthest away from my tool rest, that is the side where it is not seated properly against the chuck jaws, I will use whatever is handy but use mostly a mallet to get it to seat better if loosening and retightening at a different place does not help, now I will check if the piece is seated better (I usually have to mark the wood so I know if things do improve or if I need to use more persuasion and also look if the wood has changed shape because of drying, 2 equal high and low spots is than the best I can do, and yes I do keep in mind that there is always some flexing going on in the whole setup, like give in the wood, chuck and shaft and bearings, machining tolerances can ad up, but normally speaking I can get the wood to run very close to perfect, like maybe 10 to 20 thou. out, certainly less than 1/16" One more thing I make sure that the tenon is not so long that it bottoms out, or the recess is to deep. Hope this is some help, if you like some clarification ( It's clear to me Big G) just ask, I will try to ad to or improve my answer. Have fun and take your time and care Leo Van Der Loo mac davis wrote: ok Leo.. here's an area I'm having trouble with... I'm trying to get away from faceplate turning, to avoid the wasted wood.. (hoping to get into some more exotic wood than firewood) I've been experimenting with roughing out the bowls between centers and leaving them with either a base or tenon for the chuck, so I can do the rest of the turning with the Talon.. My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... H E L P ! ! mac Please remove splinters before emailing |
#17
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Thanks George, Its a very site.
Looks very effective that pin chuck. "George" george@least wrote in message ... "Denis Marier" wrote in message ... When I rough turn I make a tenon at the base of the green wood blanks The problem is once the blanks is dry the tenon becomes oval. I have not yet found an ideal way to true the tenon before placing it in the chuck for finishing. I sure like the pin chuck/jaws method. Puts it right back between centers once it's dry. Though if you make centers before you set it aside to dry, they'll be pretty close to where they were when time comes to reset, even if you're using a cone or such. Don't think you have to do the entire turn from a single mount, and all kinds of methods will suggest themselves. Take a look at spindle turning a bowl http://personalpages.tds.net/~upgeorge/index.html |
#18
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On Fri, 07 Jan 2005 17:42:39 GMT, "res055a5" wrote:
Right now I've got a hunk of purpleheart on there as waste wood. That one seems to work pretty well. : ) and you use ebony sticks as kindling in your fireplace? Nah, snakewood, the ebony smokes too much. -- Chuck *#:^) chaz3913(AT)yahoo(DOT)com Anti-spam sig: please remove "NO SPAM" from e-mail address to reply. September 11, 2001 - Never Forget |
#19
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On Fri, 7 Jan 2005 11:22:32 -0500, "billh"
wrote: ok Leo.. here's an area I'm having trouble with... I'm trying to get away from faceplate turning, to avoid the wasted wood.. (hoping to get into some more exotic wood than firewood) I've been experimenting with roughing out the bowls between centers and leaving them with either a base or tenon for the chuck, so I can do the rest of the turning with the Talon.. My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... H E L P ! ! mac Please remove splinters before emailing Mac, Does the chuck run true when it is mounted on the spindle? When you first chuck the bowl it should be fairly true but perhaps not perfect. This is not a big deal since all you have to do is a light cut on the outer surface of the bowl to get it true with the chucking. Don't worry if the top of the bowl is not necessarily perpendicular to the bed of the lathe since that will be quickly trued up as you continue shaping and hollowing the bowl. When you chuck the bowl in your talon make sure the front face of the jaws butts against the bottom of the bowl where it meets the tenon. The bottom of the tenon does not rest against the bottom of the jaws where they fasten to the chuck body. I always make sure I have a small flat surface about 1/4" wide where the tenon and the bottom of the bowl meets to provide good registration with the jaws. billh thanks, bill... you da man!.... at first the talon wasn't running true... I removed and replaced the adapter, (following instructions this time), and it seemed to true right up... I put a 3/4 inch dowel in it that I knew was warped, and turned it to almost no vibration, so I'm assuming that it's running true now?? I'm beginning to think it's operator error, but can't find what I'm doing wrong... I roughed a sample bowl tonight between centers and it seemed pretty stable/true... I cut a 3/8" deep tenon in it, chucked it up, and it wobbled like crazy... tried with jaws all against bottom, with space between jaws and bottom, etc, etc... still wobbled both "front to back" and out of round... since it was a tent, I spent over an hour making light cuts and trying to true it up.. the result was a lot smaller bowl with less wobble, but still not true... I've only had the Jet since late December, but the that I've turned on the faceplate seem true, and if I put the spur center and live canter in, I can push the tailstock to until the 2 points meet exactly... I had "assumed" that anything that could be chucked could be trued, but maybe I'm putting way too much faith in the chuck? BTW: I used the Talon on the Shopsmith for 2 weeks before I got the Jet, and it seemed fine... mac Please remove splinters before emailing |
#20
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On Fri, 07 Jan 2005 20:51:14 GMT, "Denis Marier"
wrote: Dennis.. I just make a ring collar chuck, from directions from Ken Vaughn's site... http://home.earthlink.net/~kvaughn65...ing_collar.jpg If your blank has a flat face and roughly round bottom, this works great to work on the bottom of the blank, and also to finish the bottom later.. When I rough turn I make a tenon at the base of the green wood blanks The problem is once the blanks is dry the tenon becomes oval. I have not yet found an ideal way to true the tenon before placing it in the chuck for finishing. "mac davis" wrote in message .. . On Fri, 07 Jan 2005 02:06:40 -0500, Leo Van Der Loo wrote: Mac there is no wrong way or right way if it works for you But I use good wood screws, in my face plate, if my screws don't strip out then I'm not afraid that the wood will come off, now the glue joint is another question, and I rarely use glued on bowl blanks, I normally cut the outside form then use the stronghold chuck to hold it and hollow the inside. Have fun and take care Leo Van Der Loo ok Leo.. here's an area I'm having trouble with... I'm trying to get away from faceplate turning, to avoid the wasted wood.. (hoping to get into some more exotic wood than firewood) I've been experimenting with roughing out the bowls between centers and leaving them with either a base or tenon for the chuck, so I can do the rest of the turning with the Talon.. My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... H E L P ! ! mac Please remove splinters before emailing mac Please remove splinters before emailing |
#21
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On Fri, 07 Jan 2005 17:58:39 -0500, Leo Van Der Loo
wrote: thanks, leo.. I haven't tried beating the **** out of it yet, but i like the idea..*g* Seriously, it might be just the adjustment that I need, but with the rubber mallet, not the BFH... OH.. by tenon, are you referring to a stub that you tighten the jaws on, or a "round groove" that you grip by expanding the jaws? I've been interpreting a tenon as an "innie" and a base as an "outtie", but I've noticed that some folks say tenon to mean either one.. Hi Mac Yes I know what you are talking about, the way I deal with it is like this, I make sure that the face around the tenon or inside the recess, is flat and clean and square, (I use a sharp scraper for that, NO sanding) then place the work piece on the chuck and pushing in the center ( in line with the spindle ) while tightening the chuck, I do NOT squeeze the living daylight out of the wood, ( wood will distort differed depending the grain of the wood )(face grain end grain knot etc. ) now I will give the wood a quick spin, with my tool rest close so I am able to see how much if any, the work piece is running out, if its out more than I like, I will find the place where the side of the piece is farthest away from my tool rest, that is the side where it is not seated properly against the chuck jaws, I will use whatever is handy but use mostly a mallet to get it to seat better if loosening and retightening at a different place does not help, now I will check if the piece is seated better (I usually have to mark the wood so I know if things do improve or if I need to use more persuasion and also look if the wood has changed shape because of drying, 2 equal high and low spots is than the best I can do, and yes I do keep in mind that there is always some flexing going on in the whole setup, like give in the wood, chuck and shaft and bearings, machining tolerances can ad up, but normally speaking I can get the wood to run very close to perfect, like maybe 10 to 20 thou. out, certainly less than 1/16" One more thing I make sure that the tenon is not so long that it bottoms out, or the recess is to deep. Hope this is some help, if you like some clarification ( It's clear to me Big G) just ask, I will try to ad to or improve my answer. Have fun and take your time and care Leo Van Der Loo mac davis wrote: ok Leo.. here's an area I'm having trouble with... I'm trying to get away from faceplate turning, to avoid the wasted wood.. (hoping to get into some more exotic wood than firewood) I've been experimenting with roughing out the bowls between centers and leaving them with either a base or tenon for the chuck, so I can do the rest of the turning with the Talon.. My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... H E L P ! ! mac Please remove splinters before emailing mac Please remove splinters before emailing |
#22
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Hi Mac Since my native language is Dutch, I have to try to make sure that I use the right words and so I checked the dictionary, it says "tenon, projection shaped to fit into a mortise". So yes a stub that's sticking out and the recess is of course an "Innie" as you say, and yes some may not know what they are talking about G. You know its hard enough already so it helps if we do not get all mixed up and call a spade a spade and an "outy a stub and an innie a recess" Very big G have fun and take care Leo Van Der Loo http://homepage.mac.com/l.vanderloo/PhotoAlbum.4html mac davis wrote: OH.. by tenon, are you referring to a stub that you tighten the jaws on, or a "round groove" that you grip by expanding the jaws? I've been interpreting a tenon as an "innie" and a base as an "outtie", but I've noticed that some folks say tenon to mean either one.. |
#23
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"mac davis" wrote in message ... My problem is that whether I use a tenon or a base, the bowl won't true on the chuck.... a neighbor that works in a machine shop thinks that the base or tenon might not be true with the face of the bowl and that if it isn't, the bowl won't true out no matter how much you carve away at it... Logic tells me that if something is true when between centers, it should be true when chucked, but I must be missing something here... I had "assumed" that anything that could be chucked could be trued, but maybe I'm putting way too much faith in the chuck? BTW: I used the Talon on the Shopsmith for 2 weeks before I got the Jet, and it seemed fine... What jaws are you using? If you're using the serrated type http://www.oneway.on.ca/chucks/talon.htm you're going to have to expend extra effort in reverse chucking. These distort the wood as you tighten them, especially if you _tighten_ them, like the "Key Features" section implies with its "power clamping" bullet. What keeps the thing true is the part you jam up against the flat you made in the base, so you want to have that tight up against the chuck before you begin to secure it. Make sure you've got a good center mark, snug the tailstock up into the center, and then tighten the chuck. Still won't always be perfect, because the design is such that it can't hold a wooden circle without distortion, exacerbated by the symmetrical serrations, but it will be as good as it gets. Better is the dovetail hold, where smooth jaws can be secured outside or inside a smooth circular section, then wedged against the flat section outside the tenon or inside the recess as they are expanded/contracted. It can hold a circle without distorting it. Just make sure that you cut a slightly steeper angle than the steel so the wedging action engages before the "grip." So the critical factor in all is the flat surface formed by the nose of the closed jaws, which should still be flat as the chuck opens. If not that, never will run true save by accident when you reverse. If you've got the jaws in the picture, I suggest you use them for single mount turnings, and hope that you don't take so long that the piece begins to dry and contract, because resecuring will always be a crapshoot. |
#24
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On Sat, 8 Jan 2005 09:17:51 -0500, "George" george@least wrote:
snip What jaws are you using? If you're using the serrated type http://www.oneway.on.ca/chucks/talon.htm you're going to have to expend extra effort in reverse chucking. These distort the wood as you tighten them, especially if you _tighten_ them, like the "Key Features" section implies with its "power clamping" bullet. What keeps the thing true is the part you jam up against the flat you made in the base, so you want to have that tight up against the chuck before you begin to secure it. Make sure you've got a good center mark, snug the tailstock up into the center, and then tighten the chuck. Still won't always be perfect, because the design is such that it can't hold a wooden circle without distortion, exacerbated by the symmetrical serrations, but it will be as good as it gets. Better is the dovetail hold, where smooth jaws can be secured outside or inside a smooth circular section, then wedged against the flat section outside the tenon or inside the recess as they are expanded/contracted. It can hold a circle without distorting it. Just make sure that you cut a slightly steeper angle than the steel so the wedging action engages before the "grip." So the critical factor in all is the flat surface formed by the nose of the closed jaws, which should still be flat as the chuck opens. If not that, never will run true save by accident when you reverse. If you've got the jaws in the picture, I suggest you use them for single mount turnings, and hope that you don't take so long that the piece begins to dry and contract, because resecuring will always be a crapshoot. George... right now I have the spigot jaws attached.. I was going to get the #1 jaws, but I had a great recommendation from Jim Pugh to get the spigot instead.. http://www.oneway.on.ca/chucks/acces...pigot_jaws.htm SO, it sounds like I missed one thing when checking the chuck.. even though it appears to be running true, I'm basing it on what I'd call in/out of round, but not "wobble" factor.. I'll check the flatness/alignment of the jaws this morning.. THANKS! (I have no patience, so I turn the whole thing in one or 2 nights, so no warping so far) mac Please remove splinters before emailing |
#25
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On Sat, 08 Jan 2005 02:41:53 -0500, Leo Van Der Loo
wrote: Leo.. it took me weeks to figure out what "CA" meant... I knew they weren't filling cracks with California, but had no idea that they meant super glue.. lol BTW, I finally looked at your web site last night... you owe me about 3 hours sleep now.. *g* Great site with lots of info and things to stir the creative juices! Hi Mac Since my native language is Dutch, I have to try to make sure that I use the right words and so I checked the dictionary, it says "tenon, projection shaped to fit into a mortise". So yes a stub that's sticking out and the recess is of course an "Innie" as you say, and yes some may not know what they are talking about G. You know its hard enough already so it helps if we do not get all mixed up and call a spade a spade and an "outy a stub and an innie a recess" Very big G have fun and take care Leo Van Der Loo http://homepage.mac.com/l.vanderloo/PhotoAlbum.4html mac davis wrote: OH.. by tenon, are you referring to a stub that you tighten the jaws on, or a "round groove" that you grip by expanding the jaws? I've been interpreting a tenon as an "innie" and a base as an "outtie", but I've noticed that some folks say tenon to mean either one.. mac Please remove splinters before emailing |
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"mac davis" wrote in message ... SO, it sounds like I missed one thing when checking the chuck.. even though it appears to be running true, I'm basing it on what I'd call in/out of round, but not "wobble" factor.. I'll check the flatness/alignment of the jaws this morning.. THANKS! Some of the same problems when gripping, as you can see. Can't fit without distorting the wood, and the symmetry of the serrations makes it a 50/50 proposition if they'll push away from the shoulder or draw toward as the wood deforms. Great thing about dovetail is it draws only toward. Push up tight against the front of those things and _then_ begin to tighten. To confirm good clean faces, just touch the jaws to the tenon while pushing against the shoulder with the tailstock and confirm you're concentric. On the up side, you can start bowls easily on these, as I do with my pin jaws, and they should never fly off the lathe like those spur-centered starts do. Get some dovetailed jaws like http://www.oneway.on.ca/chucks/accessories/no2_jaws.htm and your problems will disappear. |
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Hi Mac
If you don't know something, ask, there will probably be someone who knows, I know, some people think it looks stupid if they ask a question about something everybody else seems to know about, well in my opinion the only stupid question is the one that is NOT asked. Now you said they weren't filling cracks with California ? I thought that's exactly what they where using to fill the Andrea's fault line crack in CA. G Thanks for the compliment, I do have to get some more pictures up and change some data, a lot more of the bowl got sold and old prices seem out of whack with the present pricing, problem is I rather do the turning than the pricing and the web side changing. Have fun and take care Leo Van Der Loo mac davis wrote: Leo.. it took me weeks to figure out what "CA" meant... I knew they weren't filling cracks with California, but had no idea that they meant super glue.. lol |
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"mac davis" wrote in message ... On Sat, 8 Jan 2005 09:17:51 -0500, "George" george@least wrote: snip [snip] George... right now I have the spigot jaws attached.. I was going to get the #1 jaws, but I had a great recommendation from Jim Pugh to get the spigot instead.. http://www.oneway.on.ca/chucks/acces...pigot_jaws.htm SO, it sounds like I missed one thing when checking the chuck.. even though it appears to be running true, I'm basing it on what I'd call in/out of round, but not "wobble" factor.. I'll check the flatness/alignment of the jaws this morning.. THANKS! (I have no patience, so I turn the whole thing in one or 2 nights, so no warping so far) mac Please remove splinters before emailing Mac, When you close up the jaws in the chuck without anything in them do they close uniformly and butt against each other fairly tightly? Do you have a regular set of #2 jaws for the chuck you can try. I have the #1 spigot jaws for my Stronghold and I don't really like them for holding bowl tenons. I can't say I've had the grief you seem to be experiencing but I prefer the regular jaws. billh |
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On Sat, 8 Jan 2005 12:53:32 -0500, "George" george@least wrote:
"mac davis" wrote in message .. . SO, it sounds like I missed one thing when checking the chuck.. even though it appears to be running true, I'm basing it on what I'd call in/out of round, but not "wobble" factor.. I'll check the flatness/alignment of the jaws this morning.. THANKS! Some of the same problems when gripping, as you can see. Can't fit without distorting the wood, and the symmetry of the serrations makes it a 50/50 proposition if they'll push away from the shoulder or draw toward as the wood deforms. Great thing about dovetail is it draws only toward. Push up tight against the front of those things and _then_ begin to tighten. To confirm good clean faces, just touch the jaws to the tenon while pushing against the shoulder with the tailstock and confirm you're concentric. On the up side, you can start bowls easily on these, as I do with my pin jaws, and they should never fly off the lathe like those spur-centered starts do. Get some dovetailed jaws like http://www.oneway.on.ca/chucks/accessories/no2_jaws.htm and your problems will disappear. George.. I do have a set of the jaws shown, the chuck came with the 2's.. (see my reply to Bill, below) mac Please remove splinters before emailing |
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On Sun, 9 Jan 2005 00:36:14 -0500, "billh"
wrote: "mac davis" wrote in message .. . On Sat, 8 Jan 2005 09:17:51 -0500, "George" george@least wrote: snip [snip] George... right now I have the spigot jaws attached.. I was going to get the #1 jaws, but I had a great recommendation from Jim Pugh to get the spigot instead.. http://www.oneway.on.ca/chucks/acces...pigot_jaws.htm SO, it sounds like I missed one thing when checking the chuck.. even though it appears to be running true, I'm basing it on what I'd call in/out of round, but not "wobble" factor.. I'll check the flatness/alignment of the jaws this morning.. THANKS! (I have no patience, so I turn the whole thing in one or 2 nights, so no warping so far) mac Please remove splinters before emailing Mac, When you close up the jaws in the chuck without anything in them do they close uniformly and butt against each other fairly tightly? Do you have a regular set of #2 jaws for the chuck you can try. I have the #1 spigot jaws for my Stronghold and I don't really like them for holding bowl tenons. I can't say I've had the grief you seem to be experiencing but I prefer the regular jaws. billh Bill.. at George's suggestion, I checked the spigot jaws and when closed, one jaw is very, very slightly further forward than the other 3.. I took them off, cleaned the inner jaws, etc., and put them back on, making sure that only the jaw with the pin was in the same position as before.. still didn't seem even, so I took them off for now.. Went back to the #2 jaws that came with the chuck, and they seem, if not exactly flush at the ends while closed, closer than the spigot jaws were.. I've checked everything on the chuck and can't see what would make one outer jaw stick out more than another, so I'm thinking that I might need to true the ends of the other jaws with emory cloth or something.. mac Please remove splinters before emailing |
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On Sat, 08 Jan 2005 20:36:48 -0500, Leo Van Der Loo
wrote: Hi Mac If you don't know something, ask, there will probably be someone who knows, I know, some people think it looks stupid if they ask a question about something everybody else seems to know about, well in my opinion the only stupid question is the one that is NOT asked. Now you said they weren't filling cracks with California ? I thought that's exactly what they where using to fill the Andrea's fault line crack in CA. G Thanks for the compliment, I do have to get some more pictures up and change some data, a lot more of the bowl got sold and old prices seem out of whack with the present pricing, problem is I rather do the turning than the pricing and the web side changing. Have fun and take care Leo Van Der Loo That's exactly my problem, Leo... I'd rather be turning than the web pages.. Since I have to do web pages to pay the bills, it's a real fight for priorities.. *lol* I'm finding myself out on the lathe instead of the computer more and more lately during "business hours".. good thing I work at home! mac Please remove splinters before emailing |
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[snip] Mac, When you close up the jaws in the chuck without anything in them do they close uniformly and butt against each other fairly tightly? Do you have a regular set of #2 jaws for the chuck you can try. I have the #1 spigot jaws for my Stronghold and I don't really like them for holding bowl tenons. I can't say I've had the grief you seem to be experiencing but I prefer the regular jaws. billh Bill.. at George's suggestion, I checked the spigot jaws and when closed, one jaw is very, very slightly further forward than the other 3.. I took them off, cleaned the inner jaws, etc., and put them back on, making sure that only the jaw with the pin was in the same position as before.. still didn't seem even, so I took them off for now.. Went back to the #2 jaws that came with the chuck, and they seem, if not exactly flush at the ends while closed, closer than the spigot jaws were.. I've checked everything on the chuck and can't see what would make one outer jaw stick out more than another, so I'm thinking that I might need to true the ends of the other jaws with emory cloth or something.. mac Please remove splinters before emailing Mac, My Stronghold spigot jaws are dead flat across the tops (by eyeballing when closed). You don't say how much they are out. Do you have a instrument capable of accurately measuring them the variation in height? You might want to give Oneway a call but I would try to get a measurement first since they will probably want that info. I understand they are very helpful with any concerns about their products. Have you measured how true the chuck body runs on the lathe? A dial indicator is great for this. billh |
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On Sun, 9 Jan 2005 13:38:20 -0500, "billh"
wrote: Mac, My Stronghold spigot jaws are dead flat across the tops (by eyeballing when closed). You don't say how much they are out. Do you have a instrument capable of accurately measuring them the variation in height? You might want to give Oneway a call but I would try to get a measurement first since they will probably want that info. I understand they are very helpful with any concerns about their products. Have you measured how true the chuck body runs on the lathe? A dial indicator is great for this. billh Bill.. I'll have to dig out the dial gauge, I haven't measured, just "eyeballed" and felt... With the #2 jaws, you can run your finger over the jaws when closed (lathe not running!!) and feel the joints between the jaws but not any "height" difference between the jaws.. With the spigot jaws, you can see the higher/longer/whatever jaw buy eye and feel it enough that if you han your finger nail across the surface of the closed jaws, the high one would stop your nail.. The really strange part is that if I put any of the 3 jaws there, (pinned one has to stay in place) the jaw in that position is high... but none of the #2 jaws in that position are high... It would seem that when the Spigot jaw sits there, the inner jaw is off true, but when a #2 jaw sits in the same place, the inner jaw is fine.. wouldn't that be impossible? mac Please remove splinters before emailing |
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When I rough turn I make a tenon at the base of the green wood blanks
The problem is once the blanks is dry the tenon becomes oval. I have not yet found an ideal way to true the tenon before placing it in the chuck for finishing. I normally do rough outs and leave a tenon as opposed to a dovetail recess. If you leave the tenon larger than that which gives you "full coverage" with the chuck jaws, you can jam chuck the dried piece with the oval temon, true up the tenon and outside and chuk to reverse the inside. A dovetail recess would also, I expect, be out of round after drying. My guess is that this would be harder to re-true than a tenon as you don't have the nice convenient depression from the tailstock left from the roughing operation. Kip Powers Rogers, AR |
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"Kip055" wrote in message ... When I rough turn I make a tenon at the base of the green wood blanks The problem is once the blanks is dry the tenon becomes oval. I have not yet found an ideal way to true the tenon before placing it in the chuck for finishing. I normally do rough outs and leave a tenon as opposed to a dovetail recess. If you leave the tenon larger than that which gives you "full coverage" with the chuck jaws, you can jam chuck the dried piece with the oval temon, true up the tenon and outside and chuk to reverse the inside. A dovetail recess would also, I expect, be out of round after drying. My guess is that this would be harder to re-true than a tenon as you don't have the nice convenient depression from the tailstock left from the roughing operation. That's why you plan ahead, all right. The wood's going to distort the same regardless of your holding method, so you want to know where both centers were to reference for re-turning. My pin jaws/chuck method is quick, easy, and reliable, though you could as easily leave a modest 1/2" rise in the inside bottom of the bowl, bore a "shoulder" with that 35mm Forstner you use for cabinetry, then a concentric smaller bore to use as your centering reference. This works for folks who core their wood, either by gripping inside, or jamming a mandrel centered in the small hole, shouldered on the larger. I suppose if you're one who follows the new belief that bottoms need to be roughed thinner than the sides, you'd have to use the sides themselves against the chuck. Just tougher to maintain a good aspect until you're ready to reverse. |
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Some points that might help.
1. Make sure jaws are in the right place. Most chucks have both the jaws and where they attach to the chuck numbered. If you have the #1 jaw segment on the #2 chuck position you got trouble. 2. When attaching jaws - With the chuck slightly open, put on all jaws but don't tighten the screws, leave them a little loose. Then tighten the chuck all the way closed. Now snug the screws pretty tightly in the same way as you would when changing a tire (alternate in/out and side to side). Finally, open the chuck a little and completely tighten the screws. 3. Make sure the tennon isn't long enough to bottom out in the chuck and that you turn a flat on the bowl to mate with the top surface of the jaws. The tennon doesn't position the bowl, it's there only to grip. The top surface of the jaws meets the flat on the bowl and that's what positions the bowl. 4. The chuck should screw down all the way and meet the reference surface on the spindle. If there is any gap you got trouble. Solve the problem, if it exists, by getting a spindle washer (not one from the hardware store) these are ground to have perfectly parallel sides. Hope this helps. |
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My problem is that whether I use a tenon or a base, the bowl won't
true on the chuck. If you are working with unseasoned or partially seasoned stock, the problem may be that the tenon is "moving" and changing shape. What I do is jam chuck the bowl to be finish turned, true the tenon and outside, then chuck up and work the inside. Rarely use a dovetail recess, but expect that a similar strategy might work. Hope this helps!. If I'm not making myself clear, please feel free to get back to me in group or by email Kip Powers Rogers, AR |
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