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Posted: Thu Jun 26, 2014 11:34 am
by bffulgham
davebodner wrote:I need to make a bunch of window screens, about 3 feet wide by 5 feet tall. I was going to use 1x2 stock and miter the corners. I've done an acceptable job before, but I thought the biscuit joiner (now on sale) might make things easier and a bit stronger. In this second round of screen-making I was going to add a stretcher halfway up, which would also be biscuited.
Am I asking for trouble introducing biscuits into miters?
A #10 biscuit is a hair over 2" in length.
A #0 biscuit is 1 3/4" in length.
You're going to have a problem with 1x2 stock......
The miter cut for 1x2 stock (assuming actual size of a 1x2 being 3/4 x 1 1/2) is slightly less than 1 3/4" (1.732")
The slot for a #0 is going to be longer than the frame material width.
Posted: Thu Jun 26, 2014 2:04 pm
by rcplaneguy
BuckeyeDennis wrote:Your post got me wondering about the limits of using biscuits for structural joinery. I recalled having read about using double-biscuit joints for structural joints, but didn't know how they compared, strength-wise
I have never seen a biscuit joint fail (knocks on wood). Here I'm adding length to an over trimmed door.
Posted: Thu Jun 26, 2014 3:00 pm
by BuckeyeDennis
rcplaneguy wrote:I have never seen a biscuit joint fail (knocks on wood). Here I'm adding length to an over trimmed door.
That reminded me where I had read about using biscuits for structural joints. It was in an article about some guys building doors professionally, using tripled biscuits instead of mortise & tenon joints. Details and photos can be found
here.
Posted: Fri Jun 27, 2014 8:36 pm
by e.friedl
bffulgham wrote:A #10 biscuit is a hair over 2" in length.
A #0 biscuit is 1 3/4" in length.
You're going to have a problem with 1x2 stock......
The miter cut for 1x2 stock (assuming actual size of a 1x2 being 3/4 x 1 1/2) is slightly less than 1 3/4" (1.732")
The slot for a #0 is going to be longer than the frame material width.
I have the PC biscuit joiner and use the FF biscuits with small cutter. They work very well with 1 X 2s, You do have to be careful in centering the cutter, but properly installed they do not show, the slot is smaller than the 1 X 2s. The FF is not well know but PC made them just for use with 1 X 2s.
Ed
Posted: Fri Jun 27, 2014 9:16 pm
by bffulgham
e.friedl wrote:I have the PC biscuit joiner and use the FF biscuits with small cutter. They work very well with 1 X 2s, You do have to be careful in centering the cutter, but properly installed they do not show, the slot is smaller than the 1 X 2s. The FF is not well know but PC made them just for use with 1 X 2s.
Ed
Yep, I have the same, but the OP was considering the Shopsmith attachment, and I don't think the SS version does the FF size biscuit. And, the FF biscuit is really small. A half-lap or saddle joint would be a more sturdy joint.
Now, having said all that, the screen material pulls everything together and makes the assembly stronger anyway........
Posted: Fri Jun 27, 2014 10:06 pm
by Mike907
This won't give you an excuse to buy the biscuit joiner, but it should work for your miter joints.
[ATTACH]25491[/ATTACH]
Mike
Splined Miter Joint
Posted: Thu Jul 10, 2014 11:00 am
by rlkeeney
I have found splined miters to be very strong.
[ATTACH]25556[/ATTACH]