Reply by JBrow

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Posted on 2x10 Tabletop with no breadboard? Cupping?

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1368 posts in 1459 days

#1 posted 08-04-2016 05:17 PM


Without know the dimensions of the apron or the supports, it is difficult to predict the impact of the lap joinery you mentioned. However, cutting a rabbet or doing a through lap joint on the apron, I would think would, weaken the apron. It is just hard to know by how much the apron would be weakened and if the joinery would weaken the apron too much.

An alternative to cutting into the apron is to attach the supports (at each end of the supports) to a length of ¾” X some width lumber that I will call a sub-apron. This then creates an assembly consisting of a pair of sub-aprons connected by the cross supports. The assembly is then screwed and/or glued to the inside of the apron. This method would eliminate the need to cut into the apron and would further strengthen the apron. The downside is that it adds weight to what already will be a heavy table and care is required when cutting the cross supports to length. If the center supports are a little too short or too long, installing the overall assembly would be difficult and could cause bowing along the length of the apron.

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