I am building a bed and need to attach the head board. I am planning on attaching each side with 2 3/8" lag screws into the end of a 2x4.
The reference I saw recommended a pilot hole between 15/64" and 11/64". To test that out, I drilled a 3/16" hole in the end of a 2x4 3" deep. I found that i could put the screw in 4" without anything bad happening, which rather surprised me. So I have a few questions...
1) I want the screw to be 3" deep. Do I drill a 3" pilot hole, or something shorter.
2) It was tough all the way; should I wax the screw?
Thanks.