Domino 500 or 700 for breadboard table top

amt

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I'd like to make a breadboard table top using domino joinery.  The top would be approximately 7 feet long and 2.5 feet wide.  Not exactly sure on the thickness, but around 1" or more.  Would this project be better suited with a Domino 700?
 
Thanks for that info.  I did not consider doing this with a router, but it seems quite effective.
 
amt said:
Thanks for that info.  I did not consider doing this with a router, but it seems quite effective.

Hi again,

Just to clarify, I used D500 for dominos, and drill press and cordless drill for boring, drilling and enlarging pin holes, rather than router for this as in link. I followed the link for overall technique and particularly with regard to spacing and which domino cuts should be oversize.

Enjoy.
 

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Glad the technique was helpful Stephen B!

Amt, for a 1" thick top, I would go with the 8mm x 50mm domino. As a rule of thumb for M&T joinery, the tenon should be between 1/4 to 1/3 of the stock thickness (depending on the material).

Assuming you are using a hardwood similar in hardness to the beech dominoes, you can go with 1/3 of the thickness.

You can then divide your thickness into thirds- 1/3 mortise/loose tenon, and 1/3 above the tenon, and 1/3 below. 25.4mm divided by 3 yields 8.5mm, so you'd be OK with the 8mm domino.

At about 4:30 in my video here I do a quick demo on doing breadboard ends with the domino. Hopefully it helps- I use a 10mm domino in the demo as the stock is about 32mm thick. On a small breadboard end like the one in the video, I wouldn't bother drawboring the dowels, but if it's a thick one, then you might consider drawboring for additional holding power (you might have seen this technique in my post Stephen linked to).

 
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