Hello..
I'm using some very large linear rail on my current machine. When I got them I got several plastic caps to cover the hex screws which hold the rails on. But I'm a few short.
Basicly they are just plastic cap things which fit into the counter sink hole where that screw goes. They are .589 or 15mm in diameter and maybe 4.4M or .173 tall. with a flat top so the scraper of the liner slide can slide over them. Baislcy to cover up the hole that the 8mm linear rail allen head bolt is counter sunk into.
Didn't know if anyone had a source for something like that. Was thinking that might be something that mcmaster might have but not having success finding there.
b.