Stripped threads on tool holder profile
It sounds like I'm not the only person to have this problem... I stripped the threads clean out on the metal profile that holds the tool holders. But if this happens to you - all is not lost, I was able to work around it.
Only need this print and one M3x16 screw and M3 hex nut for each stripped hole.
https://www.printables.com/model/1309047-prusa-xl-tool-holder-profile-stripped-thread-fix
If anyone has questions, since it's kind of hard to explain fully how to do it, leave a comment on the model page... I hope to make a video once the rest of my toolheads arrive because I'll have to do it again.
I'm also curious if anyone else has other solutions to this problem. My first thought was to drill everything out and tap the profile to accept a M4, but that still leaves the problem of being up the creek if you strip it out. With this fix no matter how badly you mess it up, you can just push the nut out and try again with a new one. Plus I didn't need to modify anything.
RE: Stripped threads on tool holder profile
Design is maybe a bit overcomplicated, it was an iterative process finding something that worked. I have a new version that is one piece that should pop straight in, I'll test it out when I get the rest of my toolheads (unless someone else strips their profile out and tries it before then!)