Question regarding clamping/glueing difficulties - Woodworking Talk - Woodworkers Forum
 
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post #1 of 9 Old 02-06-2015, 02:37 PM Thread Starter
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Question regarding clamping/glueing difficulties


http://imgur.com/7kS6tTU

As seen above, one of my dining chairs has broken at the back rest.
I'm trying to glue and clamp the piece back together, but there is tension when the pieces are lined up (maybe from warping after years of being broken...) so it's impossible to keep the pieces lined up.
I have a band clamp, as well as several C-clamps available. When I try to clamp it like this (see picture), the tension makes it impossible to line up the pieces.

http://imgur.com/hsrwMZ7

tl;dr wood won't clamp because tension
Anyone have any ideas?
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post #2 of 9 Old 02-06-2015, 03:03 PM
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In order to clamp that you pretty much need to cut a board with the same contour to clamp it against. Really that part would be better replaced than repaired. It will always be a weak back with the direction the grain is running.
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post #3 of 9 Old 02-07-2015, 03:51 PM
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I agree with Steve...much better of, and likely a lot less aggravation if you remake it.
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post #4 of 9 Old 02-07-2015, 04:37 PM
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One thing that would help that chair back if you choose to repair it instead of replacing it is if you put some 3" to 4" long dowels across the break. The way it is now is almost equivalent to gluing two boards together end to end.
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post #5 of 9 Old 02-07-2015, 05:18 PM
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If you could remove that piece from the chair you would have a much better chance of gluing it.

Reinforcing with dowels is a good suggestion.

Of course if you get it off, then replacing it may be a good option. If you can get a wood and tone match.

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post #6 of 9 Old 02-07-2015, 07:02 PM
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Aside from the difficultly of to glue it back together, why do you think it broke at that location in the first place?
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post #7 of 9 Old 02-07-2015, 08:40 PM
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The back broke right there because when the tree was living there was a limb there so the grain is running front to back there on that part.
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post #8 of 9 Old 02-08-2015, 12:17 AM
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The question was rhetorical, hence the use of veneers.
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post #9 of 9 Old 02-09-2015, 10:44 PM
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Well the way I would look at it you could take some C-clamps with say a couple of pieces of metal shim stock or perhaps some feeler gauges, use this to put under the clamps to hold chair back in line then take a band clamp and pass thru the c-clamps and suck it together. Let it dry for 24 hours and I would be surprised if you had any more problems. Good Luck!

Steve
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