[GreenKeys] [External] Model 33 parts

[Eric Moore]

Thank you Doug, I have done repair on the plastic, replacing an earlier
much worse repair by the previous owner, but there is missing material for
the clips that makes it unable to sit correctly. Any suggestions on
addressing that?

On the plexi, let me take a look at your page, thank you! I was thrown off
by the sharp edge on the plastic for cutting paper, but really it is not at
all necassary.

-Eric

On Fri, Jan 20, 2023, 10:28 AM Jones, Douglas W <douglas-w-jones at uiowa.edu>
wrote:

> From:  Eric Moore [mooreericnyc at gmail.com] -- Friday, January 20, 2023
> 8:31 AM
>
> > The top cover plastic has broken,
>
> Testors liquid plastic cement works on the plastic, making bonds just
> about as strong as the original.  You can buy an ounce or so at any hobby
> shop, and it only takes a few drops.  What takes time is setup.  You need
> to clamp the broken pieces in the correct relationship to each other and
> then use the brush applicator to run the solvent into the cracks --
> capillary action will pull the solvent into the cracks.  Then let it sit
> for a day so the solvent can evaporate.
>
> > and the clear window is badly cracked.
>
> Replace the window.  You can buy plexiglass (I bought a piece at an art
> supply store).  I cut the tapered edge with a carpenter's plane (clamp the
> plexiglass between pieces of wood pre-cut to the correct angle, then plane
> the exposed edge.  The planed surface has a frosted surface, but brisk
> scrubbing with a Mr Clean polishing pad made it crystal clear.
>
> My whole experience repairing a 33 cover is documented here (follow the
> links for more detail):
>
> -- https://homepage.cs.uiowa.edu/~jones/pdp8/UI-8/bugs.shtml#17
>
>             Doug Jones
>             jones at cs.uiowa.edu
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