Am thinking it would be pretty easy to do,we shall see
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You can buy a cheapo set from HF and use a Dremel to grind the tit on a larger punch held in an electric drill.
The Roper punch mechanism is a lot more accurately made than the HF or other cheapos. It tends to be off center if the holes in it were bored a bit sloppy. The punch pine\s, that I have fit both equally. YMMV
~Richard
http://straightrazorpalace.com/works...ld-school.html
Not sure if this is along the lines of what you guys are thinking. But I like mine pretty well.