Heiz T720 three years on.

[irving2008]

...
Now, as far as I'm concerned the most important issue here is, you can't replace the Z stepper motor outside of the factory (I've had a go). For me, that's a killer fault. It would seem that unless I'm prepared to ship the machine back I've got a load of scrap metal sitting in my workshop
I see no option now but to get another machine.
I'm adding the question "can the stepper motors be replaced at home" to my list of questions before my next purchase!

ok, begs the questions:

a) why would the stepper motor be the cause of loss of accuracy - is it losing steps or what?
b) why can't you replace it?

nothing is insurmountable...

[damian_uk]

ok, begs the questions: a) why would the stepper motor be the cause of loss of accuracy - is it losing steps or what? b) why can't you replace it? nothing is insurmountable...

Yes. It's loosing steps. I can't replace it because it's fixed to the screw thread, and (quoting Prototools) is something that can only be done at the factory. I can kind of confirm this, because I couldn't manage to get it off... If you feel this is surmountable, then please do feel free to tell me how..