@craigylad86 said in Loss use of z axis.:

The z axis started to play up by missing some steps and eventually juddering up down and in opposite directions as I was controling.

That's typically caused either by excessive friction of the axis; or binding (most common when there are multiple Z motors and they have got out of sync), or setting the Z acceleration (M201) or maximum speed (M203) too high.

It could also be caused by a bad connection between the stepper motor and the Duet, so that only one phase of the motor is being driven. If that's the case then you may get "phase may be disconnected" warnings from RRF.

Ah yes, depending on how you've started a printer profile in Cura it may include some speed limiting commands for marlin based printers. Best to delete those lines.

A leadscrew with a 2mm pitch will help you in more ways than one, if you use a 2mm pitch you can utilise a full step number at multiple layer heights. And the added bonus is that the bed won't drop, the price of leadscrews means its a very cheap (but extremely worthwhile) upgrade

alright, great, thanks!
(can I mark this as solved?)

Good point, I am just curious about the possibilities is all, even thou it might over complicate things.