Peter, maybe try something like what is in this listing on Ebay UK.
Mini Punches Ebay UK
You could file down the cutting end to a half circle then just cut the straight line between the ends of the arc. Cutting a very short straight line is much easier than trying to cut a smooth small diameter arc.
__________________
~Doug~
AC010505 EAMUS CATULI! Audere est Facere THFC 19**-20** R.I.P. it up, Tear it up, Have a Ball
|