When tapping or drilling a hole where a person does not want to get metal shavings in, usse some grease on the tap or drill-bit.
--(btw,,Wally, you are very much welcome)

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!