On 24 Feb 2006 16:35:06 -0800, wrote:

Just a quick question and forgive me if it annoys you, how deep into
the wood should a screw go? A 1/3 of the width of the wood? 2/3s?

Depends on what you're screwing, what kind of wood you're using and
how strong it has to be. For a joint that doesn't need to be very
strong, you'll need less "grab" than a joint that's load bearing.
Screwing into soft wood is different than screwing into hard wood.

The only real answer is "deep enough to do the job".