Speaking of card cages...

[jwsmobile]

On 3/9/2016 3:16 PM, Vincent Slyngstad wrote:
> From: Marc Howard: Wednesday, March 09, 2016 11:51 AM
>> 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
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

> 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
>