Nyloc seized up  

Nyloc seized up

I broke my Y axis tensioner part, becuase I couldn't get the nut to in, so as per the instructions, I put a bolt through it to pull it in. Except I had an issue. The Nyloc locked onto the bolt so hard it was not funny (and started spinning in the hole). I attempted about 10 things to extract the bolt/nut without totally breaking the part.

Eventually I just took a pair of pliers to rip the bolt/nut out of the plastic. This destroyed the part... BUT I got the bolt-nut out of it!

I then proceeded to spend 10 minutes trying to get the nut off the bolt.

I finally gave up when I broke the nyloc loose, turned about 5 turns, and hit the threads I had damaged trying to remove the said nut.

Has anyone ever experienced a Nyloc Seizing up like this? (I printed a replacement tensioner and it only caused about a 3 hour delay, not a big deal, as it's not a highly visible part. (used E-Sun PLA+ Orange)

The thing is I used to work in Maintance, and I've never seen a Nyloc lock up like that.When you need to use a 10$ extra long Ellen wrench (the japanese guys where i used to work, ALWAYS wrote it as ellen, bad inside joke) and a vice grip, AND a pair of pliers, to "release" the nyloc.

I'm a little upset I need to replace the part, but I already plan on ordering 2 rolls of Prusa Orange, and 1 roll of Prusa Black PETG, for spare parts, so I'm not really worried.