[sdiy] Drilling neat holes in sheet metal (without blood)

Michael Zacherl sdiy-mz01 at blauwurf.info
Thu May 5 17:47:04 CEST 2022

oh, thanks a lot, that’s a neat trick! 
I was just about to say “step drill” but then Mr. Presling presented the .403” bit (@13:35). ;)

> On 05.05.2022, at 12:17, John P Shea <info at extrinia.com> wrote:
> https://youtu.be/cAGiuXOKKi8

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