3-d corner rounding mannually?

[darkzero]

Another couple options.
A benchtop machine like @darkzero has:
https://www.hobby-machinist.com/threads/metal-working-files-which.57471/post-472520

or a shop built one like this:
https://www.hobby-machinist.com/threads/beveling-and-deburring.57517/post-473020

There was another one, but I can't remember who posted it.
It used an electric die grinder. Hopefully I saved some info somewhere, because I wanted to build one too!

-brino

Here's another one I got recently, pneumatic, planning to use it for internal chamfering that my benchtop one can't do but of course it can do external chamfering also.

What Did You Buy Today?

Arrived today, one miracle courtesy of CCI. My match season is paid forward and planned deep, but until today I didn't have the boolits to make it. This was an incredible stroke of luck!

www.hobby-machinist.com