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#1
Posted to rec.woodworking
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Gluing dowels
It's a little late to ask at this point, as I've already glued three of
the four assemblies with the most dowels, but I've noticed some inconsistencies. I'm doing this: https://www.flickr.com/photos/gdguar...1490/lightbox/ to make four of these: https://www.flickr.com/photos/gdguar...1490/lightbox/ I'm only using glue for the top and bottom rails, plus two of the eight "rungs" in-between. To leave as little work to do as possible during the open time of the glue, I first inserted all of the dowels that will not be glued, along with their respective "rungs". The glue is Titebond I, the dowels store-bought, 3/8", fluted. I drizzle some glue into each hole in the first stile and spread it onto the walls of the hole with a thin metal rod. Then I insert the dowels and tap them in with a mallet. I do the same procedure on the first end of each rail. I can usually wiggle the parts together without any added persuasion. The second side is a different story, as I have to mate all of the dowels and holes at once. Beyond getting everything aligned, I think the slightly greater "waiting" time after applying the glue swells the wood inside the holes. (on the first side, I can apply the glue for each joint, then immediately put the parts together). In any case, last night I glued up the third ladder assembly. There was a little more squeeze-out than I had expected on two of the joints, and I took a minute to wipe it down. (in previous projects I didn't worry as much, as all the parts were prefinished). Possibly because of that (short) delay, I had a heck of a time getting the joints together, resorting to a heavier rubber mallet and some pretty energetic pounding. It worked out OK in the end, but it was worrisome at the time. So I'm wondering if this is just par for the course and working quickly is the only recommendation, or if there are any other tips anyone can offer. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#2
Posted to rec.woodworking
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Gluing dowels
On Tuesday, August 12, 2014 10:45:34 AM UTC-5, Greg Guarino wrote:
It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. Are you using clamps to squeeze your rails tight to your stiles after you glue? It seems risky not to glue everything at once, square it, and clamp it. |
#3
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 11:58 AM, Michael wrote:
On Tuesday, August 12, 2014 10:45:34 AM UTC-5, Greg Guarino wrote: It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. Are you using clamps to squeeze your rails tight to your stiles after you glue? It seems risky not to glue everything at once, square it, and clamp it. I'm not using clamps per se, but I am clamping and squaring the assembly with a jig and wedges: https://www.flickr.com/photos/gdguar...1490/lightbox/ The jig consists of two straight-edges screwed down to the work surface at right angles to one another. Small blocks of 1x2 and shims provide the clamping. https://www.flickr.com/photos/gdguar...1490/lightbox/ The first two assemblies went together square with no adjusting. The third was the tiniest bit out; there was a gap of maybe 1/32 between one leg and the jig. I used a clamp to snug that up and then applied the wedges as before. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#4
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 10:45 AM, Greg Guarino wrote:
The glue is Titebond I, the dowels store-bought, 3/8", fluted. Open time appears to be your enemy. Use a glue with an longer "open" time on the difficult side. Titebond "extend" is good to have on hand. As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. Don't have a dead blow mallet? Should be your next purchase if you're both fitting and glueing parts. -- eWoodShop: www.eWoodShop.com Wood Shop: www.e-WoodShop.net https://www.google.com/+eWoodShop https://plus.google.com/+KarlCaillouet/posts http://www.custommade.com/by/ewoodshop/ KarlCaillouet@ (the obvious) |
#5
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 11:06 AM, Greg Guarino wrote:
On 8/12/2014 11:58 AM, Michael wrote: On Tuesday, August 12, 2014 10:45:34 AM UTC-5, Greg Guarino wrote: It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. Are you using clamps to squeeze your rails tight to your stiles after you glue? It seems risky not to glue everything at once, square it, and clamp it. I'm not using clamps per se, but I am clamping and squaring the assembly with a jig and wedges: Nothing works quite like clamps. You get a lot of pressure with out pounding. |
#6
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 10:45 AM, Greg Guarino wrote:
It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. I'm doing this: https://www.flickr.com/photos/gdguar...1490/lightbox/ to make four of these: https://www.flickr.com/photos/gdguar...1490/lightbox/ I'm only using glue for the top and bottom rails, plus two of the eight "rungs" in-between. To leave as little work to do as possible during the open time of the glue, I first inserted all of the dowels that will not be glued, along with their respective "rungs". The glue is Titebond I, the dowels store-bought, 3/8", fluted. I drizzle some glue into each hole in the first stile and spread it onto the walls of the hole with a thin metal rod. Then I insert the dowels and tap them in with a mallet. I do the same procedure on the first end of each rail. I can usually wiggle the parts together without any added persuasion. The second side is a different story, as I have to mate all of the dowels and holes at once. Beyond getting everything aligned, I think the slightly greater "waiting" time after applying the glue swells the wood inside the holes. (on the first side, I can apply the glue for each joint, then immediately put the parts together). In any case, last night I glued up the third ladder assembly. There was a little more squeeze-out than I had expected on two of the joints, and I took a minute to wipe it down. (in previous projects I didn't worry as much, as all the parts were prefinished). Possibly because of that (short) delay, I had a heck of a time getting the joints together, resorting to a heavier rubber mallet and some pretty energetic pounding. It worked out OK in the end, but it was worrisome at the time. So I'm wondering if this is just par for the course and working quickly is the only recommendation, or if there are any other tips anyone can offer. Once the glue touches the other side of the joint it begins to set. With all of those dowels you have a huge amount of friction to overcome. Add to that glue that is setting and things get interesting. An extended open time glue can help. ALSO, Your dowels have ridges around the perimeter, ideally this allows excess glue AND air to escape. Works OK with a few dowels going together quickly but not so well when that are a bunch. I flatten one side of the dowels with a disk sander to make a bigger path for the glue and air to escape. That will probably help more than anything. |
#7
Posted to rec.woodworking
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Gluing dowels
"Greg Guarino" wrote in message
It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. I'm doing this: https://www.flickr.com/photos/gdguar...1490/lightbox/ to make four of these: https://www.flickr.com/photos/gdguar...1490/lightbox/ I'm only using glue for the top and bottom rails, plus two of the eight "rungs" in-between. To leave as little work to do as possible during the open time of the glue, I first inserted all of the dowels that will not be glued, along with their respective "rungs". The glue is Titebond I, the dowels store-bought, 3/8", fluted. I drizzle some glue into each hole in the first stile and spread it onto the walls of the hole with a thin metal rod. Then I insert the dowels and tap them in with a mallet. I do the same procedure on the first end of each rail. I can usually wiggle the parts together without any added persuasion. The second side is a different story, as I have to mate all of the dowels and holes at once. Beyond getting everything aligned, I think the slightly greater "waiting" time after applying the glue swells the wood inside the holes. (on the first side, I can apply the glue for each joint, then immediately put the parts together). In any case, last night I glued up the third ladder assembly. There was a little more squeeze-out than I had expected on two of the joints, and I took a minute to wipe it down. (in previous projects I didn't worry as much, as all the parts were prefinished). Possibly because of that (short) delay, I had a heck of a time getting the joints together, resorting to a heavier rubber mallet and some pretty energetic pounding. It worked out OK in the end, but it was worrisome at the time. So I'm wondering if this is just par for the course and working quickly is the only recommendation, or if there are any other tips anyone can offer. Clamps work better than hammers. IME, YMMV, HTH, HAND. Et cetera. -- dadiOH ____________________________ Winters getting colder? Tired of the rat race? Taxes out of hand? Maybe just ready for a change? Check it out... http://www.floridaloghouse.net |
#8
Posted to rec.woodworking
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Gluing dowels
On Tuesday, August 12, 2014 1:32:12 PM UTC-5, Swingman wrote:
As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. After application, how much time does he have to get the piece set up? I looked up the specs on the Titebond web site, and I can't find it. |
#9
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 2:32 PM, Swingman wrote:
On 8/12/2014 10:45 AM, Greg Guarino wrote: The glue is Titebond I, the dowels store-bought, 3/8", fluted. Open time appears to be your enemy. Use a glue with an longer "open" time on the difficult side. Titebond "extend" is good to have on hand. As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. Don't have a dead blow mallet? Should be your next purchase if you're both fitting and glueing parts. Thanks. Interesting suggestions. I suppose I will have to find a space on the board for yet another mallet. And a longer open time glue sounds like a good idea for someone at my stage of anxiety, uh, woodworking. As for "good" strong clamps, my selection is limited. I have a couple of Cabinet Masters and some pipe clamps. But the self-squaring "jig" has been of great comfort to me. I suppose I could rebuild it with "gaps" for the clamp jaws, but I think that might have to wait for a future project. I have only one more "ladder" to glue up, so I'll probably just tweak the system for now. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#10
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 2:55 PM, Leon wrote:
On 8/12/2014 11:06 AM, Greg Guarino wrote: On 8/12/2014 11:58 AM, Michael wrote: On Tuesday, August 12, 2014 10:45:34 AM UTC-5, Greg Guarino wrote: It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. Are you using clamps to squeeze your rails tight to your stiles after you glue? It seems risky not to glue everything at once, square it, and clamp it. I'm not using clamps per se, but I am clamping and squaring the assembly with a jig and wedges: Nothing works quite like clamps. You get a lot of pressure with out pounding. I'll have to try that, but maybe on the next project, and maybe after I find a deal on a couple more good clamps. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#11
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 3:01 PM, Leon wrote:
I flatten one side of the dowels with a disk sander to make a bigger path for the glue and air to escape. That will probably help more than anything. Well, I don't believe I would ever have thought of that on my own. I'm glad I asked. I don't have a disk sander, but I'm sure I could come up with some way to accomplish it. Maybe a vee shaped recess with a stop to hold the dowel, and a block plane? How much of a flat do you make? Have you still got fingerprints, by the way? Those are awfully small objects to hold against a disk sander. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#12
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 3:39 PM, dadiOH wrote:
Clamps work better than hammers. Huh. But you do miss out on the psychic benefits of hitting something. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#13
Posted to rec.woodworking
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Gluing dowels
"Greg Guarino" wrote: And a longer open time glue sounds like a good idea for someone at my stage of anxiety, uh, woodworking. ---------------------------------------- Epoxy is your friend, 25 Min @ 77F pot life. Lew |
#14
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 3:41 PM, Michael wrote:
After application, how much time does he have to get the piece set up? I looked up the specs on the Titebond web site, and I can't find it. Except for the last assembly I did, I doubt there was more than three or four minutes between glue application (in the first hole) and fitting the pieces together. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#15
Posted to rec.woodworking
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Gluing dowels
Greg Guarino wrote in
: Well, I don't believe I would ever have thought of that on my own. I'm glad I asked. I don't have a disk sander, but I'm sure I could come up with some way to accomplish it. Maybe a vee shaped recess with a stop to hold the dowel, and a block plane? How much of a flat do you make? Have you still got fingerprints, by the way? Those are awfully small objects to hold against a disk sander. I saw a tip in an old WOOD magazine where a fellow drilled a hole in the end of a piece of stock to hold a dowel. He then used the bandsaw to cut a groove in the dowel. I'd probably go for the groove and stop, as it would seem to be much faster to make. Puckdropper -- Make it to fit, don't make it fit. |
#16
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 2:56 PM, Greg Guarino wrote:
On 8/12/2014 2:55 PM, Leon wrote: On 8/12/2014 11:06 AM, Greg Guarino wrote: On 8/12/2014 11:58 AM, Michael wrote: On Tuesday, August 12, 2014 10:45:34 AM UTC-5, Greg Guarino wrote: It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. Are you using clamps to squeeze your rails tight to your stiles after you glue? It seems risky not to glue everything at once, square it, and clamp it. I'm not using clamps per se, but I am clamping and squaring the assembly with a jig and wedges: Nothing works quite like clamps. You get a lot of pressure with out pounding. I'll have to try that, but maybe on the next project, and maybe after I find a deal on a couple more good clamps. Seriously, make a flat spot in the side of the dowel too it will relieve the compression that you are working against. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#17
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 2:41 PM, Michael wrote:
On Tuesday, August 12, 2014 1:32:12 PM UTC-5, Swingman wrote: As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. After application, how much time does he have to get the piece set up? I looked up the specs on the Titebond web site, and I can't find it. IIRC the extend glue allow up to another 3~5 minutes of open time over regular glue. |
#18
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 3:00 PM, Greg Guarino wrote:
On 8/12/2014 3:01 PM, Leon wrote: I flatten one side of the dowels with a disk sander to make a bigger path for the glue and air to escape. That will probably help more than anything. Well, I don't believe I would ever have thought of that on my own. I'm glad I asked. I don't have a disk sander, but I'm sure I could come up with some way to accomplish it. Maybe a vee shaped recess with a stop to hold the dowel, and a block plane? How much of a flat do you make? the flat spot is only one way, easy for me, you could also drill a hole down the center. It only needs to be large enough to relieve the compression that builds up in the hole. Have you still got fingerprints, by the way? Those are awfully small objects to hold against a disk sander. I use domino's now. ;~) the beauty to the domino is that the side that receives the Domino first is an exact fit. A hammer over comes the resistance with each one placed one at a time. When bring the mating side though I use the elongated slot setting on the Domino mortiser to effectively relieve all possibility of compression. IIRC I used my ROS to flatten the sides of the dowels, It does not take much at all. Hold the dowel with a pair of plyers. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#19
Posted to rec.woodworking
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Gluing dowels
"Greg Guarino" wrote in message ... So I'm wondering if this is just par for the course and working quickly is the only recommendation, or if there are any other tips anyone can offer. Instead of using something like Titebond, which is undoubtedly swelling the dowels during the assembly time (they're designed to do that, when used with a water-based glue), consider using something like Nexabond, which is not water-based and will not cause swelling in the dowels. Tom |
#20
Posted to rec.woodworking
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Gluing dowels
"Greg Guarino" wrote in message
On 8/12/2014 2:32 PM, Swingman wrote: On 8/12/2014 10:45 AM, Greg Guarino wrote: The glue is Titebond I, the dowels store-bought, 3/8", fluted. Open time appears to be your enemy. Use a glue with an longer "open" time on the difficult side. Titebond "extend" is good to have on hand. As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. Don't have a dead blow mallet? Should be your next purchase if you're both fitting and glueing parts. Thanks. Interesting suggestions. I suppose I will have to find a space on the board for yet another mallet. Clamps beat mallets everytime. And a longer open time glue sounds like a good idea for someone at my stage of anxiety, uh, woodworking. Epoxy takes a _long_ time to set up. So does plastic resin glue (Weldwood). So does resorcinol. As for "good" strong clamps, my selection is limited. I have a couple of Cabinet Masters and some pipe clamps. But the self-squaring "jig" has been of great comfort to me. I suppose I could rebuild it with "gaps" for the clamp jaws, but I think that might have to wait for a future project. I have only one more "ladder" to glue up, so I'll probably just tweak the system for now. You could use clamps to assemble, then put it in your jig to square it up. -- dadiOH ____________________________ Winters getting colder? Tired of the rat race? Taxes out of hand? Maybe just ready for a change? Check it out... http://www.floridaloghouse.net |
#21
Posted to rec.woodworking
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Gluing dowels
"Greg Guarino" wrote in message
On 8/12/2014 3:01 PM, Leon wrote: I flatten one side of the dowels with a disk sander to make a bigger path for the glue and air to escape. That will probably help more than anything. Well, I don't believe I would ever have thought of that on my own. I'm glad I asked. I don't have a disk sander, but I'm sure I could come up with some way to accomplish it. Maybe a vee shaped recess with a stop to hold the dowel, and a block plane? How much of a flat do you make? Have you still got fingerprints, by the way? Those are awfully small objects to hold against a disk sander. So use a pocket knife. Or a chisel. Or a rasp. -- dadiOH ____________________________ Winters getting colder? Tired of the rat race? Taxes out of hand? Maybe just ready for a change? Check it out... http://www.floridaloghouse.net |
#22
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 2:54 PM, Greg Guarino wrote:
On 8/12/2014 2:32 PM, Swingman wrote: On 8/12/2014 10:45 AM, Greg Guarino wrote: The glue is Titebond I, the dowels store-bought, 3/8", fluted. Open time appears to be your enemy. Use a glue with an longer "open" time on the difficult side. Titebond "extend" is good to have on hand. As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. Don't have a dead blow mallet? Should be your next purchase if you're both fitting and glueing parts. Thanks. Interesting suggestions. I suppose I will have to find a space on the board for yet another mallet. And a longer open time glue sounds like a good idea for someone at my stage of anxiety, uh, woodworking. As for "good" strong clamps, my selection is limited. I have a couple of Cabinet Masters and some pipe clamps. But the self-squaring "jig" has been of great comfort to me. I suppose I could rebuild it with "gaps" for the clamp jaws, but I think that might have to wait for a future project. I have only one more "ladder" to glue up, so I'll probably just tweak the system for now. Keep in mind also the more precise you build the less you have to work about keeping the work square. Square cut joints will naturally square the assembly as you apply the clamp pressure. The head board pics that I posted a few days ago were only squared up by applying clamp pressure to the 4 rails where they met the 2 stiles. Basically if the joint is closed the angle is as it was cut to be. |
#23
Posted to rec.woodworking
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Gluing dowels
On Tuesday, August 12, 2014 11:06:34 AM UTC-5, Greg Guarino wrote:
I'm not using clamps per se, but I am clamping and squaring the assembly with a jig and wedges: https://www.flickr.com/photos/gdguar...1490/lightbox/ The jig consists of two straight-edges screwed down to the work surface at right angles to one another. Small blocks of 1x2 and shims provide the clamping. https://www.flickr.com/photos/gdguar...1490/lightbox/ The first two assemblies went together square with no adjusting. The third was the tiniest bit out; I've ocassionally used wedges for similar clamping. Driving one wedge in, from one direction, only, sometimes causes the clamped piece to move, along with the wedge, as the wedge is being driven snug. If this is the sort of misaligning you're speaking of, with the third assembly, then it would be best to use two wedges, at each point, and snug them from different directions, so that the clamped piece doesn't move out of alignment. This double wedging approach is used in other circumstances, also, somewhat like shimming door jams (from both sides of the doorway). Sonny |
#24
Posted to rec.woodworking
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Gluing dowels
On 8/12/2014 11:27 PM, Leon wrote:
On 8/12/2014 2:56 PM, Greg Guarino wrote: On 8/12/2014 2:55 PM, Leon wrote: On 8/12/2014 11:06 AM, Greg Guarino wrote: On 8/12/2014 11:58 AM, Michael wrote: On Tuesday, August 12, 2014 10:45:34 AM UTC-5, Greg Guarino wrote: It's a little late to ask at this point, as I've already glued three of the four assemblies with the most dowels, but I've noticed some inconsistencies. Are you using clamps to squeeze your rails tight to your stiles after you glue? It seems risky not to glue everything at once, square it, and clamp it. I'm not using clamps per se, but I am clamping and squaring the assembly with a jig and wedges: Nothing works quite like clamps. You get a lot of pressure with out pounding. I'll have to try that, but maybe on the next project, and maybe after I find a deal on a couple more good clamps. Seriously, make a flat spot in the side of the dowel too it will relieve the compression that you are working against. I figure I have only ten dowels to reshape, so I do plan to do it, even if I don't find an efficient method. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#25
Posted to rec.woodworking
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Gluing dowels
On 8/13/2014 9:07 AM, Leon wrote:
On 8/12/2014 2:54 PM, Greg Guarino wrote: On 8/12/2014 2:32 PM, Swingman wrote: On 8/12/2014 10:45 AM, Greg Guarino wrote: The glue is Titebond I, the dowels store-bought, 3/8", fluted. Open time appears to be your enemy. Use a glue with an longer "open" time on the difficult side. Titebond "extend" is good to have on hand. As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. Don't have a dead blow mallet? Should be your next purchase if you're both fitting and glueing parts. Thanks. Interesting suggestions. I suppose I will have to find a space on the board for yet another mallet. And a longer open time glue sounds like a good idea for someone at my stage of anxiety, uh, woodworking. As for "good" strong clamps, my selection is limited. I have a couple of Cabinet Masters and some pipe clamps. But the self-squaring "jig" has been of great comfort to me. I suppose I could rebuild it with "gaps" for the clamp jaws, but I think that might have to wait for a future project. I have only one more "ladder" to glue up, so I'll probably just tweak the system for now. Keep in mind also the more precise you build the less you have to work about keeping the work square. Square cut joints will naturally square the assembly as you apply the clamp pressure. The head board pics that I posted a few days ago were only squared up by applying clamp pressure to the 4 rails where they met the 2 stiles. Basically if the joint is closed the angle is as it was cut to be. As I mentioned in an earlier post, my tools and skills have resulted - at least in previous projects - in a bit of inaccuracy. I have been gratified to find that these "ladders" have gone together square "naturally", as you suggest they would if cut properly. The worst one so far needed to be tweaked perhaps a thirty-second. Still, it was nice to be able to see and check those good results quickly by lining the work up with the jig. I made almost all of the cuts for this project with a miter saw, but this time I took some pains to set it up correctly, using a couple of drafting triangles, a 1-2-3 block and a wixie box. It seems to have worked. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#26
Posted to rec.woodworking
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Gluing dowels
On 8/13/2014 9:14 AM, Sonny wrote:
On Tuesday, August 12, 2014 11:06:34 AM UTC-5, Greg Guarino wrote: I'm not using clamps per se, but I am clamping and squaring the assembly with a jig and wedges: https://www.flickr.com/photos/gdguar...1490/lightbox/ The jig consists of two straight-edges screwed down to the work surface at right angles to one another. Small blocks of 1x2 and shims provide the clamping. https://www.flickr.com/photos/gdguar...1490/lightbox/ The first two assemblies went together square with no adjusting. The third was the tiniest bit out; I've ocassionally used wedges for similar clamping. Driving one wedge in, from one direction, only, sometimes causes the clamped piece to move, along with the wedge, as the wedge is being driven snug. If this is the sort of misaligning you're speaking of, with the third assembly, then it would be best to use two wedges, at each point, and snug them from different directions, so that the clamped piece doesn't move out of alignment. This double wedging approach is used in other circumstances, also, somewhat like shimming door jams (from both sides of the doorway). Sonny My second "wedge" was fixed, but I set them up such that driving the movable wedge in could only tend to move the work *into* the squaring jig, not away. What I meant was that when I put the first two units into the squaring jig, they lined up perfectly right off. The third had one "leg" away from the end of the jig by a very small amount, maybe a thirty-second. A very slight amount of pressure got it perfect. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#27
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Gluing dowels
On 8/12/2014 11:48 PM, tdacon wrote:
"Greg Guarino" wrote in message ... So I'm wondering if this is just par for the course and working quickly is the only recommendation, or if there are any other tips anyone can offer. Instead of using something like Titebond, which is undoubtedly swelling the dowels during the assembly time (they're designed to do that, when used with a water-based glue), consider using something like Nexabond, which is not water-based and will not cause swelling in the dowels. Tom I guess it would behoove me to learn something about glues. The first thing I wonder is about squeeze-out. I know (sort-of) how to deal with it with Titebond, but epoxy, nexabond, polyurethane? --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#28
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Gluing dowels
On 8/12/2014 3:00 PM, Greg Guarino wrote:
Well, I don't believe I would ever have thought of that on my own. I'm glad I asked. I don't have a disk sander, but I'm sure I could come up with some way to accomplish it. Maybe a vee shaped recess with a stop to hold the dowel, and a block plane? How much of a flat do you make? No need to get fancy. Sometimes all you need is to squeeze them slightly with a pair of pliers. With the right pliers you can even get a groove of sorts for the glue to escape. -- eWoodShop: www.eWoodShop.com Wood Shop: www.e-WoodShop.net https://www.google.com/+eWoodShop https://plus.google.com/+KarlCaillouet/posts http://www.custommade.com/by/ewoodshop/ KarlCaillouet@ (the obvious) |
#29
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Gluing dowels
On 8/13/2014 9:15 AM, Greg Guarino wrote:
On 8/13/2014 9:07 AM, Leon wrote: On 8/12/2014 2:54 PM, Greg Guarino wrote: On 8/12/2014 2:32 PM, Swingman wrote: On 8/12/2014 10:45 AM, Greg Guarino wrote: The glue is Titebond I, the dowels store-bought, 3/8", fluted. Open time appears to be your enemy. Use a glue with an longer "open" time on the difficult side. Titebond "extend" is good to have on hand. As previously noted, good clamps can do a better job of getting the parts together, particularly with a rubber mallet, which has too much bounce back, compared to a dead blow mallet, which takes advantage of inertia. Don't have a dead blow mallet? Should be your next purchase if you're both fitting and glueing parts. Thanks. Interesting suggestions. I suppose I will have to find a space on the board for yet another mallet. And a longer open time glue sounds like a good idea for someone at my stage of anxiety, uh, woodworking. As for "good" strong clamps, my selection is limited. I have a couple of Cabinet Masters and some pipe clamps. But the self-squaring "jig" has been of great comfort to me. I suppose I could rebuild it with "gaps" for the clamp jaws, but I think that might have to wait for a future project. I have only one more "ladder" to glue up, so I'll probably just tweak the system for now. Keep in mind also the more precise you build the less you have to work about keeping the work square. Square cut joints will naturally square the assembly as you apply the clamp pressure. The head board pics that I posted a few days ago were only squared up by applying clamp pressure to the 4 rails where they met the 2 stiles. Basically if the joint is closed the angle is as it was cut to be. As I mentioned in an earlier post, my tools and skills have resulted - at least in previous projects - in a bit of inaccuracy. I have been gratified to find that these "ladders" have gone together square "naturally", as you suggest they would if cut properly. The worst one so far needed to be tweaked perhaps a thirty-second. Still, it was nice to be able to see and check those good results quickly by lining the work up with the jig. I made almost all of the cuts for this project with a miter saw, but this time I took some pains to set it up correctly, using a couple of drafting triangles, a 1-2-3 block and a wixie box. It seems to have worked. Practice makes perfect! FWIW your doing well, IMHO. |
#30
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Gluing dowels
On 8/13/2014 9:47 AM, Greg Guarino wrote:
I guess it would behoove me to learn something about glues. Can't hurt at all. That said, It's not usually the swelling of the dowels that is the problem - and it's biscuits that are purposely designed to swell, not necessarily dowels. AAMOF, with the initial coating (and providing the piston effect is mitigated) you may notice a slight lubrication effect at first ... until the glue starts to set. Also, you may also have this same sticky problem, from exceeding the open time slightly, when gluing mortise and tenon joints that are sloppy enough that the piston effect is not an issue. IOW, and with most hardwood dowels, I question, from experience, that it is water based glue at the root of the problem. Non water based glues, like Nexabond are great for smaller and/or special applications, but for gluing most furniture and cabinet projects, prepare to dent the hell out of your budget, and possibly still not solve the issue if you exceed the open time. -- eWoodShop: www.eWoodShop.com Wood Shop: www.e-WoodShop.net https://www.google.com/+eWoodShop https://plus.google.com/+KarlCaillouet/posts http://www.custommade.com/by/ewoodshop/ KarlCaillouet@ (the obvious) |
#31
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Gluing dowels
Firstly, thanks for the tip about flattening one side of the dowels.
That made things much easier. And I thought of a very simple way to do it efficiently: https://www.youtube.com/watch?v=Qtk7...ature=youtu.be The "jig" probably took all of a minute to make. As an added bonus, my fingers are just as long as before I started. |
#32
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Gluing dowels
Subject
Got a vice? Got a 10" Flat ******* File? The rest is an exercise in flattening. Lew |
#33
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Gluing dowels
On 8/13/2014 9:59 PM, Lew Hodgett wrote:
Subject Got a vice? Got a 10" Flat ******* File? The rest is an exercise in flattening. Lew I wanted a way to avoid all of the clamping and unclamping, and found one. |
#34
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Gluing dowels
Lew Hodgett wrote:
Subject Got a vice? Got a 10" Flat ******* File? The rest is an exercise in flattening. Lew ------------------------------------------- "Greg Guarino" wrote: I wanted a way to avoid all of the clamping and unclamping, and found one. ------------------------------------------------------- So did I. Lew |
#35
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Gluing dowels
In the time before time, before biscuits and Dominoes there reigned the dowel.
We made our own dowels many a time as they could be hard to get. Without a thickness planer, it was too hard to make great fitting splines quickly, but you could take your calipers and find rod stock that would work somewhere and buy a couple of sticks that would last a long time. If the stock was too large, we simply put a piece in a drill chuck and "reduced it" with a piece of 80gr. You would be surprised how well that worked. For striations, I came up with my own method. I drilled several holes in a straight line from edge to edge (not lengthwise) and cut the board in two down the middle of the holes. I put the dowels I had cut to length into my holding jigs and just used masking tape to hold them into the concave cut outs in the board. I could easily get two lengthwise air/glue relief cuts on each dowel by just touching it to a band saw blade, since I only needed about 1/32" deep. Using a piece of 1x4 scrap, I could about 5 dowels per board half, and the dowels were cut to length and ready to go when I pulled the tape off. This really just took a few minutes to make a bunch. The beauty is that you aren't confined to one size of dowel and this method will work on any size wood rod you find that matches up to your drill bits. When I made larger, custom dowels, I used a piece of 2X6 for the holding jig and cut 3/4 dowels from rod stock. On these (used in making/repairing doors) I would rotate the dowel stock and cut a couple more striations on the opposing side of the first cuts. That all came to me one day while in the shop and I couldn't get the dowels I wanted. Never seen anyone do it that way... but I can testify it works like a champ. Robert |
#36
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Gluing dowels
On 8/13/2014 8:36 PM, Greg Guarino wrote:
Firstly, thanks for the tip about flattening one side of the dowels. That made things much easier. And I thought of a very simple way to do it efficiently: https://www.youtube.com/watch?v=Qtk7...ature=youtu.be The "jig" probably took all of a minute to make. As an added bonus, my fingers are just as long as before I started. Good Idea but you probably only need to make 2 passes at the most. You are only providing a passage for air and glue to escape. |