Key cap repair

[srowe]

I've managed to acquire a Eurostile keyboard, unfortunately someone has botched repairing one of the function keys

I'm trying to work out how best to repair it. I have two thoughts.

1. rebuild the "cross head" with epoxy, for this I need a form in place of the plunger top and something as a mold release so it's not permanently stuck
2. create a "cross head" insert and glue it in the key cap

For both these I really need to build a jig to get the alignment in 3D correct.

I don't have a 3D printer so any solution will have to be done by hand. Any better thoughts how I can do this?

[chysn]

Play Doh? Something that will mold over the cross, then dry hard to provide support, but won’t stick to the shaft.

[srowe]

Air dry modelling clay perhaps? I'm struggling to think of a way to create a jig. I could use another key, back-to-back, but then need a cross-shaped shaft to form the hole in the key.

[Vic20-Ian]

Try a Lego Axle

[srowe]

Try a Lego Axle

Ooh, I wonder if I can (ab)use something like this?

https://www.brickowl.com/catalog/lego-a ... -hole-6538

[Vic20-Ian]

They fit.

https://ideas.lego.com/projects/4548993 ... 916d7f697d