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Default How deep into the wood should a screw go?

On Wed, 05 May 2021 20:10:52 -0500, Markem618

On Wed, 05 May 2021 20:33:05 -0400, wrote:

On Wed, 5 May 2021 14:29:45 -0700 (PDT), DerbyDad03

On Wednesday, May 5, 2021 at 4:45:06 PM UTC-4, jboisver wrote:
A good rule of thumb is that the screw should drive through to about half the thickness of the bottom piece. So a 1" thick piece being screwed to a 2" thick piece should have a 2" screw.

I need to hang some 1/4 luan on a 6 x 12 beam. I guess I need a 6 screw.

Oh...wait...the bottom piece will be the luan. I only need a 1/8 screw.

A 1/2" screw for 1/4" material is bad enough.

How about "just few nails to tack it in place till the glue dries" for
the luan.

How about not using luan on a ceiling.