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Some additional thoughts
The tap drill index will show three different size twist drills for the hole you will be tapping.
Use the smallest size drill for several reasons:
1) Smaller hole is less intrusive in the strength of the frame.
2) Screw will remain in place better in a smaller hole.
3) Repair will be less detectable with a smaller hole.
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Doc
My reading of history convinces me that most bad government results from too much government. Thomas Jefferson
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