Breadboard tabletop

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Forum topic by Steve posted 07-26-2015 05:15 AM 1128 views 1 time favorited 6 replies Add to Favorites Watch
View Steve's profile


188 posts in 2169 days

07-26-2015 05:15 AM

Well just putting my first breadboard style tabletop together and used my router and a straight bit to cut my tenon, the questions are how much room do you think I should give the mortise for expansion? And do you think the tenon should be left full length as shown in the photo, or broken down into multiple tenons?

6 replies so far

View conifur's profile


955 posts in 1321 days

#1 posted 07-26-2015 12:17 PM

I believe for wood movement they figure 1/16 per 12” of width on average, and multiple tenons are stronger then one large one.

-- Knowledge and experience equals Wisdom, Michael Frankowski

View pjones46's profile


1001 posts in 2812 days

#2 posted 07-26-2015 12:46 PM

Here is a good article with some suggestions for prep and layout.

-- Respectfully, Paul

View distrbd's profile


2252 posts in 2616 days

#3 posted 07-26-2015 04:26 PM

Pjones,I was looking for that link to post but you beat me to it, I think it explains very well how simple it can be to to allow for wood movement in BB design.

I had to learn the hard way myself, made a small coffee table with a nice BB style top, 3 months late we heard a loud crack coming from out living room, it was my coffee table top with a 1/4” crack right in the middle of it, but I left it as a reminder on what not to do,plus, the crack almost disappear in Summer months. .

-- Ken from Ontario, Canada

View pjones46's profile


1001 posts in 2812 days

#4 posted 07-26-2015 07:23 PM

Here are a couple of other links which may be of interest in the future:

Wood Movement and How It Affects Your Woodworking Projects

Estimate Wood Movement

The Shrinkulator

-- Respectfully, Paul

View rwe2156's profile


3133 posts in 1650 days

#5 posted 07-26-2015 11:45 PM

+1 on the stepped tenons.
Looking good.

-- Everything is a prototype thats why its one of a kind!!

View Steve's profile


188 posts in 2169 days

#6 posted 07-28-2015 12:52 AM

Thanks for the info guys

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