Hi everyone, I was hoping someone could help me figure out how to remove the coarse focuser knob from my AT65EDQ so that I can attach a stepper motor.
The picture below shows the focuser, and there you can see the socket in the right-hand knob for the set screw. I have removed the set screw, but I still can't get the knob off. I can get the know to rotate (without the focuser racking in/out) when the set screw is removed, but something seems to be preventing the knob from slipping off.
I'm a little terrified to pull super hard (but honestly I've just been pulling harder and harder to no avail). Anyone have any ideas what I'm missing here?