Mortise and tenon wide board - Woodworking Talk - Woodworkers Forum
 
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post #1 of 5 Old 03-29-2016, 07:57 AM Thread Starter
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Mortise and tenon wide board

I am in the process of making side tables and have a question about joining the sides and backs with the 4 corner posts. The sides are going to be 12" wide and the the corner posts are 1-1/4" square. I am thinking of using mortise and tenon joinery, but am concerned about wood movement on such large side boards. I am considering using three smaller tenons on each end which should reduce the tension somewhat. If I were to go with three tenons, should I glue all of them?

Any other advice would be greatly appreciated.

Jeff
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post #2 of 5 Old 03-29-2016, 08:07 AM
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You would be alright using a wide tenon. If there was any excessive shrinkage it would break the joint rather than the side. Still I doubt if you would experience that.
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post #3 of 5 Old 03-29-2016, 04:08 PM
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You could add some haunches but like Steve I think you will be ok.
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post #4 of 5 Old 03-31-2016, 08:42 PM Thread Starter
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I was considering a haunch. How deep should the tenon and haunch be? 3/8 and 3/4?
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post #5 of 5 Old 04-01-2016, 04:28 PM
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If I'm not doing a through tenon I generally have my tenon 3/4 the thickness of the wood I'm joining to and the haunch a third of the length of the tenon. There's no hard and fast rules, as far as I know, just use your comman sense. Hope it goes well.
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