tenon thickness

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Forum topic by Pabs posted 10-31-2011 07:23 PM 1181 views 0 times favorited 5 replies Add to Favorites Watch
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236 posts in 3453 days

10-31-2011 07:23 PM

hey all

what’s the standard size for a tenon? if using 3/5 stock would the tenon be 1/4 thick?

or should it be thicker than that?

and what is the rule for the depth of the tenon?


-- Pabs

5 replies so far

View SnowyRiver's profile


51457 posts in 3480 days

#1 posted 10-31-2011 07:57 PM

The general rule is 1/3 of the thickness of the stock.

-- Wayne - Plymouth MN

View pintodeluxe's profile


5660 posts in 2813 days

#2 posted 10-31-2011 08:15 PM

I go along with the 1/3 the thickness of the tenoned workpiece rule. Unless I am mortising into a thick leg, then I have the freedom to make the tenon a little bigger.
Remember it is not just the size of the tenon that gives a M&T joint its strength, but also the shoulders which help resist racking forces.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View crank49's profile


4030 posts in 2970 days

#3 posted 10-31-2011 08:43 PM

This is a link to the same discussion a couple days ago.

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236 posts in 3453 days

#4 posted 11-02-2011 04:06 AM

thanks guys!

-- Pabs

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236 posts in 3453 days

#5 posted 11-02-2011 06:58 AM

humm…from what I understand the longer tenon would offer the best glue surface so it would make for stronger joint (in tension at least) but if the joint is being worked side to side then I would think the thicker tenon would be beneficial as it would offer more lateral strength.. .
that would be my guess… .wonder what others have to say about it

-- Pabs

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