jhaley Posted March 25, 2015 Report Share Posted March 25, 2015 This image is for the base of a slab coffee table. These 2 pieces will cross at the midpoint creating an "X" when you look down from the top. With the width of each narrow section where they cross is 5". Also, the open area of each arch faces down. How would you connect them? I was thinking about notching each piece by 2.5" and slid them together. But would that be too weak? Or i could not notch the long piece and cut the shorter piece into 2. Then join with dowels or short tenons. Quote Link to comment Share on other sites More sharing options...
Coop Posted March 25, 2015 Report Share Posted March 25, 2015 What is the size of the slab? Quote Link to comment Share on other sites More sharing options...
jhaley Posted March 25, 2015 Author Report Share Posted March 25, 2015 The slab is 60" x 23" x 2" Quote Link to comment Share on other sites More sharing options...
Immortan D Posted March 25, 2015 Report Share Posted March 25, 2015 Doesn't look stable to me. Anyways, I'd split the shorter piece, join with dowels to the long piece, then reinforce all four corners with quarter circles. Quote Link to comment Share on other sites More sharing options...
Coop Posted March 26, 2015 Report Share Posted March 26, 2015 The slab is 60" x 23" x 2" Unless your going to have this configuration on each end, I agree with Daniel, you'll have a support problem. That's a pretty sizable chunk of wood. Quote Link to comment Share on other sites More sharing options...
jhaley Posted March 26, 2015 Author Report Share Posted March 26, 2015 Appreciate the feed back but I'm not understanding support or stability. Are you thinking it's tippy? The base will be 48" x 20". Also not sure what quarter circles are. Is that hardware or just rounding off the corners. Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 26, 2015 Report Share Posted March 26, 2015 Cut the short one , 1/8 deep dados and dowels. Quote Link to comment Share on other sites More sharing options...
Coop Posted March 26, 2015 Report Share Posted March 26, 2015 Did not realize the pieces were that wide. Listen to Steve Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 26, 2015 Report Share Posted March 26, 2015 Shallow dado will make the joint look like you cut a perfect half lap. And also stiffen the joint considerably. Remember to allow for the slab to expand and contract when you attach the base. Z clips, furniture buttons or slots to allow the screws to move across the grain. A walnut slab that size might move 3/8 to almost 1/2" over the year as the seasons change. Finishing the underside of the slab might slow this down but you can't stop it. If you don't allow for the slab to move it might crack. Quote Link to comment Share on other sites More sharing options...
jhaley Posted March 26, 2015 Author Report Share Posted March 26, 2015 I like this approach better. Thanks for the input. Quote Link to comment Share on other sites More sharing options...
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