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Author Topic: knee brace size and tenon question  (Read 440 times)

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Offline windfall

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knee brace size and tenon question
« on: June 20, 2017, 04:06:58 pm »
Hello, I'm using doug fir 3x8 brace stock.  I would like to put a 2 inch tenon (width) with a one inch shoulder, 3 inch deep with a 1/2 inch housing.   These would be offset from the reference face.   I noticed the tenon size and shoulder are usually 1 1/2 inch each (split equally).  Also is the one inch of wood left for the shoulder and pegging enough? thankyou

Offline timberwrestler

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Re: knee brace size and tenon question
« Reply #1 on: June 20, 2017, 09:16:33 pm »
As long as you're not taking too much meat out of the corresponding piece with the mortise, then that will work.  As a very rough guideline, the mortise width would be 1/4 of the timber width.

Offline windfall

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Re: knee brace size and tenon question
« Reply #2 on: June 20, 2017, 10:20:22 pm »
okay thanks...I guess I forgot to state the post dimensions...8x10 so plenty of room overall on the ratio basis, was just wondering if an inch of shoulder was enough? as Id rather do 2 inch tenon than the standard 1 1/2 for a 3 inch thick material. thankyou

Offline Brad_bb

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Re: knee brace size and tenon question
« Reply #3 on: June 21, 2017, 12:35:14 am »
I started out cutting 3" brace stock but quickly changed to 4" Thick.  Split one of the brace tenons driving the peg.  You want 2 shoulder on a 2"  tenon. Use 4x8 brace stock.  You can cut a curve in it or don't depending on your taste.
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline windfall

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Re: knee brace size and tenon question
« Reply #4 on: June 21, 2017, 12:42:19 am »
Darn...I was afraid I'd hear that.  Makes sence...I was just trying to use what I had available.  Thanks for the advice!