On 04/13/2010 05:10 PM, Lew Hodgett wrote:

For wood working, use S/S coarse thread, self tapping sheet metal
screws along with a 75% of thread OD pilot drill.

I'm curious about your rationale...

1) Why S/S unless it's in a damp location? They're way more expensive
and harder to find.

2) Why sheet metal screws? Aren't they normally threaded the full length?

3) The scientific literature suggests the pilot hole should be 75% of
the root diameter in low density woods and up to 100% of the root
diameter in high density woods. Technically the outer thread diameter
doesn't matter.

Chris