[X] Looking at the state of the grub screws.

A project log for Coaxial8or [gd0144]

Full-colour FFF? Multi-materials with unparalleled interlayer bond strength? Abrasives without abrasion?

kelvinakelvinA 06/02/2023 at 17:160 Comments

For the single M3 grub screw that actually went all the way in, it looked fine.

For all the other ones tho... 

Some screwed out with plastic:

Some screwed out with plastic remaining in the hole:

Dark greyish PETG in the left and what looks to be cleaning material in the right hole.

And some didn't budge at all and it looked like I could risk breaking the M3.

I'm thinking that the small size of M3's are unsuitable for this kind of work. I'd imagine that M4's would be more reliable, and they certainly can handle more torque. The hex M4 grubs that hold the heatsinks seem sturdy enough.