I have a Commodore 64. The internal plastic stands for the board were all cracked and some were completely destroyed. See pictures
In a futile attempt to fix them, I removed the old broken ones, sandpapered the area (a small hole remains, as in the old stand the screw went a bit through the case) and tried replacing them with a nylon stand, cutting it to length and attaching it with epoxy
But the unfortunate reality is that epoxy has very little strength when torqued, and the stand inevitably detaches.
I tried 3D printing larger stands to ensure more surface (I have a resin 3D printer) but the tolerances are very small (the screw is a M3) and, most importantly, the resin is not very strong and glassy, and delaminates/snaps when the screw bites.
I am out of ideas. Anyone?