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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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#1
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Newbie here...
OK, I have been patiently trying to learn some turning. Mostly turning a bunch of coat-style hooks for aprons, etc. They all seem to end up looking like pawns, but that is another story.... Anyway, I have been trying it with the skew chisel. This tool kinda drives me crazy. When I used gouges, I wondered what all the fuss with "catches" was; just rub the bevel, happy happy joy joy. Then came the skew; whoa, you *can* knock something out of a Talon pretty easily. I have the "Turning Wood" video and book but it is .... less then helpful (that is a topic for another posting). I am coming to the belief that my primary problem is that my skew is too thin. Odd theory, I know; but the problem seems to be that I need a really extreme angle to rub the bevel, so much so that the tailstock/head gets in the way much of the time. It seems I frequently end up with an unsupported edge and some really nasty catches. This is because the factory angle is quite shallow (which I more or less duplicated). A very shallow angle will be a bit wierd on such a thin tool (a Henry Taylor oval skew, http://www.leevalley.com/wood/page.a...1,330,43164,43 173&ccurrency=1&SID=); it seems a bit unwieldy. The ones in the book/video are much thicker. I have been really determined to keep expenses in check and concentrate on technique and would really appreciate any help here. PK |
#2
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If you are knocking pieces out of a Talon with a skew then you have to be
digging the point into the workpiece. Always pay close attention to where the top tip is at all times and make sure you are working above center. You do not necessarily rub the bevel on a skew it is worked at all angles to form the shapes and curves and cut you desire. I often do lay it rather flat and then lift and rotate the handle to feed it into the workpiece. Make sure your tool rest is close to the workpiece and at a height that makes cutting comfortable and above center. The skew must be sharp and it is the one lathe chisel that I will spend time honing to get a good edge. When you mentioned the Talon I thought you might be using it on a bowl- doesn't really work except for decorative grooves made by the tip. Billh "Paul Kierstead" wrote in message news ![]() Newbie here... OK, I have been patiently trying to learn some turning. Mostly turning a bunch of coat-style hooks for aprons, etc. They all seem to end up looking like pawns, but that is another story.... Anyway, I have been trying it with the skew chisel. This tool kinda drives me crazy. When I used gouges, I wondered what all the fuss with "catches" was; just rub the bevel, happy happy joy joy. Then came the skew; whoa, you *can* knock something out of a Talon pretty easily. I have the "Turning Wood" video and book but it is .... less then helpful (that is a topic for another posting). I am coming to the belief that my primary problem is that my skew is too thin. Odd theory, I know; but the problem seems to be that I need a really extreme angle to rub the bevel, so much so that the tailstock/head gets in the way much of the time. It seems I frequently end up with an unsupported edge and some really nasty catches. This is because the factory angle is quite shallow (which I more or less duplicated). A very shallow angle will be a bit wierd on such a thin tool (a Henry Taylor oval skew, http://www.leevalley.com/wood/page.a...1,330,43164,43 173&ccurrency=1&SID=); it seems a bit unwieldy. The ones in the book/video are much thicker. I have been really determined to keep expenses in check and concentrate on technique and would really appreciate any help here. PK |
#3
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If you have a live center use your old dead center in the headstock to
drive the work. Now, if you get a catch the work will just spin and not scare hell out of you. If the work keeps spinning after the catch, tighten the tail stock. The other benefit of using the dead center to drive your work is you'll start using your tools with a soft touch. This technique also works with the gouge. I frequently rough out turnings between center, driving with the dead center. If you look at the Sorby Stebcenter it's just a dead center with some notches. If you're good with a file you can make your own. The second part is to use the bottom 1/3d of the skew (not the pointy end). Remember the skew is a flat gouge and you still have to RUB THE BEVEL!!! and feel your way into the cut. The third part is to make everything in your shop that's not round, round. When you're no longer spooked reverse hands so you don't keep bumping into the headstock. There's a lot more to the skew but the hints above should get you started. If you have a chance to watch Richard Raffan's Videos you'll appreciate what can be done with the skew. I've not seen Alan Lacer's video but I understand it's very good. Good Luck Paul Kierstead wrote: Newbie here... OK, I have been patiently trying to learn some turning. Mostly turning a bunch of coat-style hooks for aprons, etc. They all seem to end up looking like pawns, but that is another story.... Anyway, I have been trying it with the skew chisel. This tool kinda drives me crazy. When I used gouges, I wondered what all the fuss with "catches" was; just rub the bevel, happy happy joy joy. Then came the skew; whoa, you *can* knock something out of a Talon pretty easily. I have the "Turning Wood" video and book but it is .... less then helpful (that is a topic for another posting). I am coming to the belief that my primary problem is that my skew is too thin. Odd theory, I know; but the problem seems to be that I need a really extreme angle to rub the bevel, so much so that the tailstock/head gets in the way much of the time. It seems I frequently end up with an unsupported edge and some really nasty catches. This is because the factory angle is quite shallow (which I more or less duplicated). A very shallow angle will be a bit wierd on such a thin tool (a Henry Taylor oval skew, http://www.leevalley.com/wood/page.a...1,330,43164,43 173&ccurrency=1&SID=); it seems a bit unwieldy. The ones in the book/video are much thicker. I have been really determined to keep expenses in check and concentrate on technique and would really appreciate any help here. PK |
#4
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Alan Lacer has a pretty good video on skew chisel use. You can find his web
site at http://www.woodturninglearn.net/. He's also got some pretty good articles on the site including a lesson on sharpening. Andy "Paul Kierstead" wrote in message news ![]() Newbie here... OK, I have been patiently trying to learn some turning. Mostly turning a bunch of coat-style hooks for aprons, etc. They all seem to end up looking like pawns, but that is another story.... Anyway, I have been trying it with the skew chisel. This tool kinda drives me crazy. When I used gouges, I wondered what all the fuss with "catches" was; just rub the bevel, happy happy joy joy. Then came the skew; whoa, you *can* knock something out of a Talon pretty easily. I have the "Turning Wood" video and book but it is .... less then helpful (that is a topic for another posting). I am coming to the belief that my primary problem is that my skew is too thin. Odd theory, I know; but the problem seems to be that I need a really extreme angle to rub the bevel, so much so that the tailstock/head gets in the way much of the time. It seems I frequently end up with an unsupported edge and some really nasty catches. This is because the factory angle is quite shallow (which I more or less duplicated). A very shallow angle will be a bit wierd on such a thin tool (a Henry Taylor oval skew, http://www.leevalley.com/wood/page.a...1,330,43164,43 173&ccurrency=1&SID=); it seems a bit unwieldy. The ones in the book/video are much thicker. I have been really determined to keep expenses in check and concentrate on technique and would really appreciate any help here. PK |
#5
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In article ,
JHS wrote: I've not seen Alan Lacer's video but I understand it's very good. Excellent video - Lacer's "The Skew Chisel". Well explained, clear video, lots of detail and explanation. -- "To know the world intimately is the beginning of caring." -- Ann Hayman Zwinger |
#6
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Paul,
A) I always figure the bevel should rub in the clean area immediately following the cut, not in an area alongside where you are cutting. Think of it more like a plane instead of a knife. Bring the skew around so the handle is closer to 75 - 80 degrees to the ways of the lathe and work with the very bottom of the cutting edge (the obtuse angle, not the acute angle). If you use only the bottom 1/8" of the blade you won't be too far wrong. B) I recommend Alan Lacer's video, too. C) Take the other suggestion about making everything you can find round. Practice helps a bunch. Good Luck, David Paul Kierstead wrote: Newbie here... OK, I have been patiently trying to learn some turning. Mostly turning a bunch of coat-style hooks for aprons, etc. They all seem to end up looking like pawns, but that is another story.... Anyway, I have been trying it with the skew chisel. This tool kinda drives me crazy. When I used gouges, I wondered what all the fuss with "catches" was; just rub the bevel, happy happy joy joy. Then came the skew; whoa, you *can* knock something out of a Talon pretty easily. I have the "Turning Wood" video and book but it is .... less then helpful (that is a topic for another posting). I am coming to the belief that my primary problem is that my skew is too thin. Odd theory, I know; but the problem seems to be that I need a really extreme angle to rub the bevel, so much so that the tailstock/head gets in the way much of the time. It seems I frequently end up with an unsupported edge and some really nasty catches. This is because the factory angle is quite shallow (which I more or less duplicated). A very shallow angle will be a bit wierd on such a thin tool (a Henry Taylor oval skew, http://www.leevalley.com/wood/page.a...1,330,43164,43 173&ccurrency=1&SID=); it seems a bit unwieldy. The ones in the book/video are much thicker. I have been really determined to keep expenses in check and concentrate on technique and would really appreciate any help here. PK |
#7
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Paul,
If you are trying to make some of the skew cuts that Raffan shows, be sure that you have a RADIUS edge skew. A straight edged skew doesn't work well for some of his cuts. If you are trying to roll a bead as on the end of a shaker style peg (coat hook) the skew has to move in three directions simultaneously. The blade has to roll, be pushed toward center, and as you get close to center, the end of the handle has to swing in a horizontal arc. also be sure that you are cutting only with bottom i/8" edge of the blade with the obtuse point down. -- Dan Kozar remove NOSPAM |
#8
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One of the standard answers to the problem is to make the skew more
gouge-like by grinding a convex profile. That way if the rotation grabs, there is just a bit of natural relief to keep the thing from running too far. Lots of information on that in standard sources. Now, if you're turning Shaker pegs or similar, which is what I liked to start the kids at school on, you'll feel much better with a non-skewed chisel. The skew really comes into its own on longer tapers and flats, not on short ones. For that, what the old birds called a beading tool is great. If you're like most people and bought a set of tools to begin turning, you can take that 1/2" spear-point scraper and make it into a beading tool by grinding skew-slope bevels either side of a squared end. This planes, cuts and sizes that tenon beautifully, and since it is almost infinitely relieved, it doesn't catch. What it also doesn't do is reference as well for long straight or tapered sections, because you can't lay as much bevel on the work as a skew. It'll tend to ride up and down until you get really proficient with it. Alternatives include a tool with a bevel on one side only called a Bedan, or, for a preview, you might want to try working with your 1/4" parting tool as if it were an extremely blunt chisel. Roll a few convex surfaces with it, and you'll be convinced. "Paul Kierstead" wrote in message news ![]() Newbie here... OK, I have been patiently trying to learn some turning. Mostly turning a bunch of coat-style hooks for aprons, etc. They all seem to end up looking like pawns, but that is another story.... Anyway, I have been trying it with the skew chisel. This tool kinda drives me crazy. When I used gouges, I wondered what all the fuss with "catches" was; just rub the bevel, happy happy joy joy. Then came the skew; whoa, you *can* knock something out of a Talon pretty easily. I have the "Turning Wood" video and book but it is .... less then helpful (that is a topic for another posting). SNIP |
#9
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I was advised to start using my skew for everything, even including
roughing. You need to develop a feel for what positions of the tool will work, and which are dangerous, by practice, practice, practice. You will eventually stop having so many catches, and will be able to think about the work, without consciously thinking about the tool positition. |
#10
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Leo and all:
I need, I think, to interject my thinking here. There is no question that the skew is hard to use. Maybe that is because it is just not the best tool for a lot of what we are trying to use it for -- maybe there are better tools for just about everything we try to use it for! Planing cuts on spindles? My roughing gouge has the wings well ground back. The tool cuts in the center of the edge just as everybody else's does. But, if I roll it over on edge and keep the handle perpendicular to the cut, it will take a shearing cut. I defy you to tell the difference between the surface I get and the surface from a skew. If you analyze what I'm doing you will see that the edge is presented the same way with both tools. Making beads? Use a 3/8 beading and parting tool. It is much easier to use and also has a lot of other uses. And it is cheap. The brits like Martin Pidgen (http://www.fholder.com/Woodturning/pulls.htm) turn more beads in a day than we turn in a month. Martin uses the 3/8 beading and parting tool. If it is good enough for him, it is good enough for me. The only time you need a skew is when making v cuts which are very narrow or beads which are close together. In these cases use a small, hand-made round skew. Make it from a piece of drill blank -- one in 1/4" and one in 3/8" will meet all your needs. Bill In article , says... I was advised to start using my skew for everything, even including roughing. You need to develop a feel for what positions of the tool will work, and which are dangerous, by practice, practice, practice. You will eventually stop having so many catches, and will be able to think about the work, without consciously thinking about the tool positition. |
#11
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Paul Kierstead wrote:
I have been really determined to keep expenses in check and concentrate on technique and would really appreciate any help here. Sometimes the best way to learn is to have someone standing next to you. Check the sig line at the end of this message, find the local chapter near you and if you haven't already, join the AAW as well as the local chapter. You'll find a bunch of people who can help you and will be happy to do so. Dave in Fairfax -- Dave Leader reply-to doesn't work use: daveldr at att dot net American Association of Woodturners http://www.woodturner.org Capital Area Woodturners http://www.capwoodturners.org/ PATINA http://www.Patinatools.org/ |
#12
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Bill,
I use both the skew and a roughing gouge in a shearing cut. I find the cut from the skew to be better than that of a roughing gouge. Don't know why exactly but I can definitely see what I'm doing better with a skew. My skew also tends to be sharper and have a finer edge (I hone it) than my roughing gouge (which just comes off of the grinder). I think the rubbing bevel of the skew tends to do a better job of burnishing the wood and requires little sanding. I slowly learned the skew over the 6 years I have been turning and I am glad I have. Tony Manella ndd1"at"prolog.net (remove "at") http://home.ptd.net/~ndd1/ Lehigh Valley Woodturners http://www.lehighvalleywoodturners.com/ "Bill Rubenstein" wrote in message . net... Leo and all: I need, I think, to interject my thinking here. There is no question that the skew is hard to use. Maybe that is because it is just not the best tool for a lot of what we are trying to use it for -- maybe there are better tools for just about everything we try to use it for! Planing cuts on spindles? My roughing gouge has the wings well ground back. The tool cuts in the center of the edge just as everybody else's does. But, if I roll it over on edge and keep the handle perpendicular to the cut, it will take a shearing cut. I defy you to tell the difference between the surface I get and the surface from a skew. If you analyze what I'm doing you will see that the edge is presented the same way with both tools. Making beads? Use a 3/8 beading and parting tool. It is much easier to use and also has a lot of other uses. And it is cheap. The brits like Martin Pidgen (http://www.fholder.com/Woodturning/pulls.htm) turn more beads in a day than we turn in a month. Martin uses the 3/8 beading and parting tool. If it is good enough for him, it is good enough for me. The only time you need a skew is when making v cuts which are very narrow or beads which are close together. In these cases use a small, hand-made round skew. Make it from a piece of drill blank -- one in 1/4" and one in 3/8" will meet all your needs. Bill |
#13
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In article ,
Dave in Fairfax wrote: Paul Kierstead wrote: I have been really determined to keep expenses in check and concentrate on technique and would really appreciate any help here. Sometimes the best way to learn is to have someone standing next to you. Check the sig line at the end of this message, find the local chapter near you and if you haven't already, join the AAW as well as the local chapter. You'll find a bunch of people who can help you and will be happy to do so. This is absolutely true of course. There is a woodturners club here as well. I have entirely too much enthusiasm for learning things on my own; my mother always called it something along the lines of "independent stubborn (*&$# ... ". I will admit seeing beats reading by an order of magnitude. PK |
#14
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In article , "George" george@least
wrote: One of the standard answers to the problem is to make the skew more gouge-like by grinding a convex profile. That way if the rotation grabs, there is just a bit of natural relief to keep the thing from running too far. Lots of information on that in standard sources. I actually did that after posting the message and it did help some. Now, if you're turning Shaker pegs or similar, which is what I liked to start the kids at school on, you'll feel much better with a non-skewed chisel. Well.... I guess the thing I was pursuing was doing said pegs as a way of practicing with the skew; i.e. the goal was using the skew, not making pegs; the pegs part was just so something came out of it. If you're like most people and bought a set of tools to begin turning, you can take that 1/2" spear-point scraper and make it into a beading tool by grinding skew-slope bevels either side of a squared end. I didn't buy a set; got one roughing gouge, got a smaller gouge (1/2" I think), a skew and a parting tool. From my reading I should be able to do al lot of non-bowl turning with that lot. But that is an interesting suggestion for the future which I filed away. Alternatives include a tool with a bevel on one side only called a Bedan, or, for a preview, you might want to try working with your 1/4" parting tool as if it were an extremely blunt chisel. Roll a few convex surfaces with it, and you'll be convinced. Hmmm... that I will try. Sounds like fun. Thanks for all the help and suggestions! PK |
#15
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In article ,
Dan Kozar wrote: If you are trying to make some of the skew cuts that Raffan shows, be sure that you have a RADIUS edge skew. A straight edged skew doesn't work well for some of his cuts. If you are trying to roll a bead as on the end of a shaker style peg (coat hook) the skew has to move in three directions simultaneously. The blade has to roll, be pushed toward center, and as you get close to center, the end of the handle has to swing in a horizontal arc. also be sure that you are cutting only with bottom i/8" edge of the blade with the obtuse point down. I have since put the radius on there. Helps for sure; thanks for that suggestion (and the others who said it!)!! Does make a fair difference. LOL, I'll say the ends are a complex movement. I started with some glued up scrap cherry (y'know, very dry cherry isn't the easiest turning stuff, especially the roughing part...) to make a peg for hanging my air hose on. This is for practice of course. The peg started out way more then long enough. By the time I got the end bead done even passably, it was way too short ![]() and learning though. PK |
#16
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In article ,
"Andy Reynolds" wrote: Alan Lacer has a pretty good video on skew chisel use. You can find his web site at http://www.woodturninglearn.net/. He's also got some pretty good articles on the site including a lesson on sharpening. Thanks for the pointer to the site! I read a couple of articles and they are enlightening. I will have to contemplate the video's; gonna be expensive by the time they get to Canada and he doesn't make ordering easy.... but still, sometimes you want quality, you have to pay a little and put a little work into it. PK |
#17
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In article ,
JHS wrote: If you have a live center use your old dead center in the headstock to drive the work. Now, if you get a catch the work will just spin and not scare hell out of you. If the work keeps spinning after the catch, tighten the tail stock. The other benefit of using the dead center to drive your work is you'll start using your tools with a soft touch. This technique also works with the gouge. I frequently rough out turnings between center, driving with the dead center. If you look at the Sorby Stebcenter it's just a dead center with some notches. If you're good with a file you can make your own. I don't have a dead center and have been looking at the Stebcenter. Actually, the catches don't ... scare me much (I think I might be stupid), but they are mighty irritating and I would like to limit the damage caused. I suspect larger stock might make me more respectful too. Perhaps I should try them out; I am not 100% sure that the price is "worth it" though, although I admit several people have recommended this so perhaps I should *listen*. The second part is to use the bottom 1/3d of the skew (not the pointy end). Remember the skew is a flat gouge and you still have to RUB THE BEVEL!!! and feel your way into the cut. I thing I was using too much edge. I have ground a slight radius and that seems to help too. The third part is to make everything in your shop that's not round, round. When you're no longer spooked reverse hands so you don't keep bumping into the headstock. My shop is rapidly approaching square-wood-challenged status. Tis fun. There's a lot more to the skew but the hints above should get you started. If you have a chance to watch Richard Raffan's Videos you'll appreciate what can be done with the skew. I've not seen Alan Lacer's video but I understand it's very good. I have his Turning Wood video. The problem is that he doesn't really describe what he is doing much, or show it. The video definitely helped, but could be a *lot* better. I guess it is getting a bit long in the tooth. PK |
#18
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Tony Manella wrote:
I use both the skew and a roughing gouge in a shearing cut. I find the cut from the skew to be better than that of a roughing gouge. Don't know why exactly but I can definitely see what I'm doing better with a skew. My skew also tends to be sharper and have a finer edge (I hone it) than my roughing gouge (which just comes off of the grinder). I think the rubbing bevel of the skew tends to do a better job of burnishing the wood and requires little sanding. Whilst I agree that you can cut wood with just about any sharp piece of metal, should one wish, certain tools will perform better in certain circumstances. There are many significant differences between the geometry of skew chisels and roughing gouges. The sharpening angle of a skew is usually much more acute. This obviously makes the tool sharper, but it also means that the bevel is much longer and this can make the tool more stable. The bevel of a skew is also flat, and I suspect that this makes it easier to control, compared to the conical surface of the roughing gouge bevel. Another interesting point is that the skew is sharpened on both sides. This reduces the angle between the rubbing bevel and the axis of the tool. So when you push the tool forward, more of that pushing force is going in the direction of the cut rather than pushing the bevel against the wood. -- Derek Andrews, woodturner http://www.seafoamwoodturning.com Wedding Favors ~ Artisan Crafted Gifts ~ One-of-a-Kind Woodturning |
#19
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It's safer for a newbie to use the roughing gouge, though. Bigger surface
on the rest, doesn't roll as easily. "Tony Manella" ndd1 at prolog.net wrote in message ... Bill, I use both the skew and a roughing gouge in a shearing cut. I find the cut from the skew to be better than that of a roughing gouge. Don't know why exactly but I can definitely see what I'm doing better with a skew. My skew also tends to be sharper and have a finer edge (I hone it) than my roughing gouge (which just comes off of the grinder). I think the rubbing bevel of the skew tends to do a better job of burnishing the wood and requires little sanding. I slowly learned the skew over the 6 years I have been turning and I am glad I have. |
#20
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In article ,
"billh" wrote: If you are knocking pieces out of a Talon with a skew then you have to be digging the point into the workpiece. Always pay close attention to where the top tip is at all times and make sure you are working above center. It is usually the tip that digs in indeed, leaving a very unsightly groove. I think the above center part may some of the problem. helpful advice snipped for brevity When you mentioned the Talon I thought you might be using it on a bowl- doesn't really work except for decorative grooves made by the tip. Billh No no, no bowls for me. Thanks for all the help! It definitely helps. PK |
#21
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True, but everyone who does spindle turning should learn sometime.
Tony Manella ndd1"at"prolog.net (remove "at") http://home.ptd.net/~ndd1/ Lehigh Valley Woodturners http://www.lehighvalleywoodturners.com/ "George" george@least wrote in message ... It's safer for a newbie to use the roughing gouge, though. Bigger surface on the rest, doesn't roll as easily. "Tony Manella" ndd1 at prolog.net wrote in message ... Bill, I use both the skew and a roughing gouge in a shearing cut. I find the cut from the skew to be better than that of a roughing gouge. Don't know why exactly but I can definitely see what I'm doing better with a skew. My skew also tends to be sharper and have a finer edge (I hone it) than my roughing gouge (which just comes off of the grinder). I think the rubbing bevel of the skew tends to do a better job of burnishing the wood and requires little sanding. I slowly learned the skew over the 6 years I have been turning and I am glad I have. |
#22
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Paul,
I've followed this thread with interest since the skew is my favorite tool. Using the skew is like shaving with a straight razor, the blade glides across the skin on its bevel and you do the same with the skew on the wood. With the lathe off, hold the skew against the wood and rotate the piece to see how and where the skew is cutting; understanding this helps a lot. Good Luck Ruth |
#23
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In article , Ruth
wrote: I've followed this thread with interest since the skew is my favorite tool. Using the skew is like shaving with a straight razor, the blade glides across the skin on its bevel and you do the same with the skew on the wood. With the lathe off, hold the skew against the wood and rotate the piece to see how and where the skew is cutting; understanding this helps a lot. I recall a post I made some time back bemoaning the skew. IIRC you were one of the turners that gently corrected me, and I went back to the lathe and spent some time learning to use the tool. I never did express my thanks for that correction. I quite enjoy using the skew now. Thanks. djb |
#24
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Tony Manella wrote:
True, but everyone who does spindle turning should learn sometime. This may help some: http://www.alaska.net/~atftb/skew1.htm ....Kevin -- Kevin & Theresa Miller Juneau, Alaska http://www.alaska.net/~atftb |
#25
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If you are knocking pieces out of a Talon with a skew then you have to be
digging the point into the workpiece. Always pay close attention to where the top tip is at all times and make sure you are working above center. You do not necessarily rub the bevel on a skew it is worked at all angles to form the shapes and curves and cut you desire. I often do lay it rather flat and then lift and rotate the handle to feed it into the workpiece. Make sure your tool rest is close to the workpiece and at a height that makes cutting comfortable and above center. The skew must be sharp and it is the one lathe chisel that I will spend time honing to get a good edge. BRBR Bill, I have to respectfully disagree with you. As Allan Batty, the master of the skew chisel says, it is not the tip of the long point that causes the catch. The tip is what makes that spiral you see, but that's because the tip is the last thing that was drawn into the wood when the long straight edge became unsupported and dug into the wood. Like any other woodturning tool, when you lift the bevel off the wood the edge is unsupported and it can dig in. It's not the point that causes the catch, it's the unsupported edge. That said, a skew with more mass such as Alan Lacer uses is much friendlier than a small oval skew such as the Sorby. Try making a skew out of a 3/8 thick square scraper, easing the corners a bit, and you will be amazed at how much more friendly it becomes. -Jim Gott- San Jose, CA |
#26
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I think there's a point being missed over and over again about the skew, and
that is what Jim is saying. If you use it anywhere below the very top of your turning, the open edge can be drawn into the cut _by the rotation of the piece_ as you begin any downward motion of the edge, regardless the bevel. It's for precisely that reason that people grind convex profiles on their skews to give them a little bit more clearance, or use a gouge, which clears in two directions. Think about the geometry of it. The heel is never farther from center than the extended portion , so rotating the tool to cut inward may bring the extended portion _further_ into the cut than the edge you're trying to control, resulting in a catch. Can't do this with a short square chisel - one point of tangency possible only, anywhere above centerline. Think that's why the bodgers used 'em to cut beads - a skew would have caught "Jim Gott" wrote in message ... If you are knocking pieces out of a Talon with a skew then you have to be digging the point into the workpiece. Always pay close attention to where the top tip is at all times and make sure you are working above center. You do not necessarily rub the bevel on a skew it is worked at all angles to form the shapes and curves and cut you desire. I often do lay it rather flat and then lift and rotate the handle to feed it into the workpiece. Make sure your tool rest is close to the workpiece and at a height that makes cutting comfortable and above center. The skew must be sharp and it is the one lathe chisel that I will spend time honing to get a good edge. BRBR Bill, I have to respectfully disagree with you. As Allan Batty, the master of the skew chisel says, it is not the tip of the long point that causes the catch. The tip is what makes that spiral you see, but that's because the tip is the last thing that was drawn into the wood when the long straight edge became unsupported and dug into the wood. Like any other woodturning tool, when you lift the bevel off the wood the edge is unsupported and it can dig in. It's not the point that causes the catch, it's the unsupported edge. That said, a skew with more mass such as Alan Lacer uses is much friendlier than a small oval skew such as the Sorby. Try making a skew out of a 3/8 thick square scraper, easing the corners a bit, and you will be amazed at how much more friendly it becomes. -Jim Gott- San Jose, CA |
#27
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George wrote:
I think there's a point being missed over and over again about the skew, and that is what Jim is saying. If you use it anywhere below the very top of your turning, the open edge can be drawn into the cut _by the rotation of the piece_ as you begin any downward motion of the edge, regardless the bevel. It's for precisely that reason that people grind convex profiles on their skews to give them a little bit more clearance, or use a gouge, which clears in two directions. Think about the geometry of it. The heel is never farther from center than the extended portion , so rotating the tool to cut inward may bring the extended portion _further_ into the cut than the edge you're trying to control, resulting in a catch. Can't do this with a short square chisel - one point of tangency possible only, anywhere above centerline. Think that's why the bodgers used 'em to cut beads - a skew would have caught I guess if that works for you then great, but it would be very awkward to cut on the top of the turning for me. I usually set the rest so that my skew is cutting between 10 and 11 o:clock (so to speak) with the long point up. What you have to pay attention to is that you cut on the *bottom* half of the edge if the long point's up. That will leave the top half up in the air, away from the wood, hence no catch. When rolling a bead I find that it's easiest to roll it about half way,cutting w/the heel then turn the tool over and finish the cut w/the long point. YMMV. Note that some (for instance Raffan) like to take take planing cuts with the long pont down. In that case the rest is about center line, the skew nearly verticle and the long point is cutting roughly along the centerline. This cut is best for roughing out an out of round piece to get it true... ....Kevin |
#28
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It's actually pretty neat. You curl your off hand around the turning,
fingers straight down to avoid stubbing, and put your thumb on the skew. Don't need a steady. "Millers" wrote in message ... I guess if that works for you then great, but it would be very awkward to cut on the top of the turning for me. I usually set the rest so that my skew is cutting between 10 and 11 o:clock (so to speak) with the long point up. |
#29
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George wrote:
It's actually pretty neat. You curl your off hand around the turning, fingers straight down to avoid stubbing, and put your thumb on the skew. Don't need a steady. I can see how that would work for taking a cylinder down to a smaller size, but I don't think I'd try to cut any beads or coves that way. Actually, it sounds to me like one of those "I'm a trained professional kids, don't try this at home" sort of things. g Unless we're talking a little half inch diameter or thereabouts. I've done that before... ....Kevin |
#30
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Frank Pain, bodger extraordinaire. If you have to have one book to learn to
turn - not what to turn, of them there are hundreds - get _The Practical Woodturner_ if you can find it in print. One thing I honestly have to say about the way I turn is that I have taught it to kids from 11 to 18 years old. It's definitely not professional. "Millers" wrote in message ... Actually, it sounds to me like one of those "I'm a trained professional kids, don't try this at home" sort of things. g Unless we're talking a little half inch diameter or thereabouts. I've done that before... ...Kevin |
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