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Recent Bios FAQ

276629 Chuck Taylor 2022‑11‑27 Re: knockdown shelf project continues to entertain me
Darrell asks about wedge angles:

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I decided to use a 10 degree wedge for the tusk tenons.
that seems to be small enough to stick and large enough
to unstick without having to hammer the heck out of it.
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Degrees work pretty well in math class, but for woodworking I have found that
"rise and run" ratios are easier to use. For Krenov-style plane wedges I was
taught to use a ratio of 1:10, which works well for me. YMMV.

Here are some ratios that cover a reasonable range for wedges and their
equivalents in degrees:

1:4 is about 14 degrees
1:5 is about 11.3 degrees
1:6 is about 9.5 degrees
1.7 is about 8.1 degrees
1:8 is about 7.1 degrees
1:9 is about 6.3 degrees
1:10 is about 5.7 degrees
1:11 is about 5.2 degrees
1:12 is about 4.4 degrees

I find that ratios are easier to mark out and reproduce consistently. YMMV.

Cheers,
Chuck Taylor
north of Seattle USA

Recent Bios FAQ