Thanks, Gary. I had actually started down that path by filing a slot all the way across a phillips screw with a saw file. The triangular file made the slot rounded at the edges, so it was less effective. Don’t know why I didn’t just follow up with the Dremel.
Dave, I did the same with a brass screw and it worked okay, just not as effectively as I’d hoped based on Paul’s demonstration. Could also be operator inexperience.
Just moved to NE Ohio