@mrpete222
@mrpete222
mrpete222 | TWIST DRILL GEOMETRY #978 huge teaching aid tubalcain @mrpete222 | Uploaded June 2024 | Updated October 2024, 1 hour ago.
This is a lesson on TWIST DRILL GEOMETRY. You must understand the angles of a drill tip in order to successfully sharpen a dull twist drill.
I used the giant "PETERSON PRODUCTS" drill teaching aid to explain the nomenclature and angles of a drill. For extra credit, I explain how I made the teaching aid.
Thanks to KEVIN for loaning the giant drill for this video.
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TWIST DRILL GEOMETRY #978 huge teaching aid tubalcain @mrpete222

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