Files needed to fit beavertail to stainless frame

[anyplainjoe]

Can someone help me select the right types of files to fit a beavertail to a stainless frame? I plan on using a cut off wheel to make the two largest cuts, then file around the jig.

[Iron bottom]

I like a Swiss #2 or #3 half round. Grobet is a good brand. They may be ordered from Shor Intrenational if not available locally.