"Doc" wrote in message
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To further elaborate, I'll have two 12-3" screws at each point where the
frame members join.

Thought I'd add I'm pre-drilling the holes with a drill press (using a
homemade guide on the ends of the 2x4's) with a bit that's about the same
size as the inner shaft of the screws (not the screw planes themselves) to
avoid splitting the wood.