12 Oct
2022
12 Oct
'22
8:26 a.m.
-----Original Message-----
From: Wayne S via cctalk <cctalk(a)classiccmp.org>
Sent: 11 October 2022 20:23
To: General Discussion: On-Topic and Off-Topic Posts <cctalk(a)classiccmp.org>
Cc: Wayne S <wayne.sudol(a)hotmail.com>
Subject: [cctalk] Re: PDP 8a front panel hardware
A local machine shop or even a college machine shop could knock out 10 of
those in an hour probably in steel. It’s worth investigating i think.
Many small machine shops have now switched to laser cutting. I got a load of paper tape
stuff from a place that was getting rid of its "traditional" CNC stuff and
switching to laser.
A year or too ago I went on a 12" train ride at a garden center. When I asked about
where he got the train from, he said it was a downloadable design, which was then laser
cut...
... even the wheels...
I have a 3-d printer, but I don't have much in the way of metal working tools. Its
that way round because friends already had such things and would make stuff for me...
Dave
Sent from my iPhone
On Oct 11, 2022, at 11:17, Vincent Slyngstad via
cctalk
<cctalk(a)classiccmp.org> wrote:
On 10/11/2022 10:48 AM, geneb via cctalk wrote:
> If someone wants to provide me with a drawing, I'd be happy to design a 3D
model of the part and print a few of them for testing.
Here's a pointer to mine:
https://so-much-stuff.com/pdp8/cad/3d.php
https://svn.so-much-stuff.com/svn/trunk/3D/8AClip/8aClip.jpg
The two holes in the base take screws to mount to the rack. Depending on left
vs
right, you would drill and tap the indentations on one side or the other.
I could swear there was a recent (in the last year) conversation with Michael
Thompson and others about this on VCForum, but it must have been before the
VCForum site moved, as the search tool didn't find it.
Anyway, the original is bent bar stock, with notching near the apex, and a nut
press-fit/spot welded where I've drawn an indent. I've drawn it as a triangular
plastic block in an effort to make it more structural.
A recessed screw in the KC8-A screws into the nut from the bottom to attach
the
panel on each side.
>
> Vince