9 Mar
2016
9 Mar
'16
9:46 p.m.
On 3/9/2016 3:16 PM, Vincent Slyngstad wrote:
From: Marc Howard: Wednesday, March 09, 2016 11:51 AM
Those are different
than the ones I have in my cage. Marc, do you have
ones like mine, or Vince's? Again I've not seen the ones in the 600
chassis, so don't know if they are what Vince printed or not.
These are more like the ones that were used in most of the Microdata
1600 card cages. They used one piece ones like this, and ones with two
slotted guides / slot as well in those.
As I said in my reply the ones in the 400 card cage are the ones which
have the round blisters with two strips composing all the card guides on
each side, rather than one / slot.
thanks
Jim
Has anyone ever reproduced the card guides used
in the 8/A chassis? I
assume these are identical to those used in PDP-11s as well. My are
beyond
brittle.
I have 3D printed the ones here:
http://www.so-much-stuff.com/pdp8/cad/3d.php
http://svn.so-much-stuff.com/svn/trunk/3D/CardGuide/8AGuide.jpg 
with some success.
They are still fragile things, even when new. The hardest part is the
springy bits that clip into the card cage. They can be not springy
enough, or they're too hard and snap off instead of compressing.
(I've also snapped the spine off the guide trying to compress them.)
Still, with the right plastic and the right print, they seem to work
at least as well as the aged originals did.
Vince