16 Oct
2015
16 Oct
'15
8:18 a.m.
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: chrise at 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 <cube1 at 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 <drb at msu.edu> wrote:
some
--
Chris Elmquist > 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 years ago. They work through the window in the
sleeve, so don't
require
> opening the sleeve. But they're for 5.25".
>
> De