deskthority

This is mostly me checking to make sure I'm doing the right thing.

I got in a 1987 IBM Model M 122 a week or so ago -- I've got it stashed somewhere I can't get to, ATM. It has about a 10cm crack that stops just shy of one of the legs. It's a clean crack and there's no missing plastic. The bottom case is PVC, right? Is JB Weld the recommended product (I'm in the US) or is there something else I should use?

I've not used that one specifically. I've used the JB Weld PlasticWeld product on a couple things.

J-B Weld 50132 PlasticWeld Quick-Setting Epoxy

JB Weld PlasticWeld Plastic Repair Epoxy Putty

I have used JB Weld (original formula is best) on Model F cases but not Model Ms.
I reinforced the back side with a length of wire embedded in a gob of it, just to be sure.

Thanks very much!

Good comparison of different epoxies. Seems like the original JB Weld is a good choice for a variety of applications.

That video bugs me because it's a very specific test on a very specific type of plastic (nylon). Results may vary wildly with other types of plastic, including the ABS often used in keyboard cases.