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cupped timber

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Roy B08/07/2010 09:44:45
11 forum posts

     I have just been tasked with repairing a small oak tilt top table. The repairs consist os re-gluing the 4 pieces of oak that make up the top. The top is approx. 4ft. round and the parts have parted cleanly at the joints. It appears that it has been apart for quite a while as the two inner pieces have cupped and I feel if i re-join them as they are I will have a very wavy top. The oak is approx. 3/4 in. thick and when complete will have two braces underneath to keep the top stable. these are held in place by screws. Does anyone have any suggestions as to how top can be straightened out prior to glueing or whether it is possible to glue the top up and then straighten it.
Andy Bell08/07/2010 12:52:35
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156 forum posts
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I'd start by acclimatising the parts to the condtions (moisture content) where the table will be going. 
 
If it's been broken a while, the bits may have been stored in a shed or garage (more damp than centrally heated house). Resulting in the cupping.
 
Andy 
AnselmFraser04/11/2010 17:21:20
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12 forum posts
When the oak boards have dried out and they are still not straight you will have to cerf them from underneath so as to bend them straight (use a circlar saw or a router) the braces then will keep them straight.
Good luck .
Anselm.

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