I recently installed my dual extruder v2, and I’m dialing it in and getting it to work well. I’ve used cura some, and Simplify3D.
I have a question about the levelling screw, which is pictured well in the OHAI assembly instructions, step 21. I’ve added this picture here, plus some markings pointing to where I’m asking about.
I want to add a knurled knob to the cap of the levelling screw, because it’s very inconvenient to use a hex wrench, and I’m pretty sure I can get enough force with a knob. (When I’m only using 1 extruder, the rear, I like to adjust the front extruder high out of the way.)
There’s a nut on the end of the levelling screw which I first thought was a lock nut that one would tighten after adjusting the levelling screw. But on my system, this nut is ‘fused’ or ‘stuck’ onto the threads. Tight enough that a tug on a small wrench wouldn’t loosen. If it’s supposed to be ‘stuck’ on the threads, I don’t want to break it.
So is this just really a lock nut, or somehow stuck on to keep the screw captive?