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Old 10th Feb 2019, 10:28 am   #17
60 oldjohn
Dekatron
 
Join Date: Dec 2004
Location: East Yorkshire, UK.
Posts: 3,959
Default Re: Using hole punches on die cast boxes

Quote:
Originally Posted by Restoration73 View Post
Step drill is not the same as a conecut bit - I have used the latter in a hand drill but for
plastic and ally but a slow drill speed is needed.

https://www.kelvinpowertools.com/con...-c-443-p-10890

OOPS, My mistake, I have both and I know the difference. I agree with every word above. Step drill cutting progressive steps should not wander.


John.
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