How to sharpen drill bits, helpful Tip ('Pun' intended)
Channel: lee isenberg
Date: 2015-05-17

Sorry this is not a thorough, complete start to finish how to on drill bit sharpening, but this is a very helpful tip for efficient drilling.

I'm not sure what this is called, maybe a "secondary relief", let me know if you know.


take care from Tn, & have a good one!