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Center drills, god love em, soo easy to twist off.They are not the optimum to start with.Correct angle for a center…. wrong angle for a drill, 118..A ultra short, web thinned drill sharpened a bit wider 120 say.None of those problems.
your compound should be angled the other way for internal threads.
Right you are thanks for reminding me
Center drills, god love em, soo easy to twist off.
They are not the optimum to start with.
Correct angle for a center….
wrong angle for a drill, 118..
A ultra short, web thinned drill sharpened a bit wider 120 say.
None of those problems.
your compound should be angled the other way for internal threads.
Right you are thanks for reminding me