Trick for Cleaner Threads
Use this tip to square your tap with the hole.
Zero-clearance: It's like putty in your hands
Extend the life of your zero clearance inserts.
For rows of round holes, turn to a square
A modified drywall t-square substitutes for a commercial shelf-pin jig.
How do I make a large hole?
Whats the best way to make a hole larger than my largest holesaw?
