I do still have some 16 hole 5-1/4 punches left. ( anyone want one? ) Actually it was stainless and Delrin. I'd makes some slight changes if I did it again. It really needed two alignment pins. It didn't need to have the envelope removed. One rotated the envelope to expose the next hole location. Dwight > From: chr...@pobox.com > > The punch aligns with the index hole since we are starting with soft-sector > media and that's the only hole we have. Then it "clamps" the media and you > rotate the punch and the media together to align each sector hole with a hole > in the template part of the punch and slam the punch pin through. It's > harder to put in words than it is to do. > > Generally, they worked pretty well. The original idea was Dwight's and I had > a friend with precision machine shop build them from aluminum and delrin. > > Some users complained about "hanging chads" as the punch pin sometimes didn't > cut the media cleanly but this was fairly rare. > > Chris > > On October 15, 2015 4:19:24 PM CDT, Jay Jaeger <cu...@charter.net> wrote: > >So, hole by hole - what about the extra hole for the index - one would > >need the jig to have an extra hole for the punch for that at 1/2 > >spacing. > > > >Sent from my iPad > > > >On Oct 15, 2015, at 13:36, Dennis Boone <d...@msu.edu> wrote: > > > >>> I doubt it. They need to be very accurate, and one would not want > >to > >>> open the sleeve to punch one. > >> > >> A set of 10- and 16-hole punching jigs were done by a list member > >some > >> years ago. They work through the window in the sleeve, so don't > >require > >> opening the sleeve. But they're for 5.25". > >> > >> De > > -- > Chris Elmquist
