On Aug 26, 11:22 am, Fortunat1 wrote:

...
I did some practice pieces using some scrap steel parts.
I located the first hole as accurately as I could, then drilled the rest
using the steel part as a guide. I started each cut by hand just turning
the chuck until it was in a bit and then turned the power on. The
resulting hole was about as good as it gets with zero tearaway. The bolt
fit perfectly with the fit just enough friction to hold the bolt in by
itself.

It sounds like your workmanship illustrates the difference between
a builder and a craftsman.

--

FF