hello all, this is my first post and my first 3d printer :-) but i have a problem... I have bought a perusal i3 with Z axis trapazoid screws but the screws won't screw in to the brass nuts to operate the Z axis - so as a quick fix i fitted M8 MS studding and built the printer up until replacement lead screws arrive. my problem is that the Z axis calibration is wrong , 10mm travel is actually 6mm because i have studding and not the course threaded lead screws. does anyone have firmware that is setup for 8mm studding ? or how do i change the travel parameters. thanks all mike. Setup Perusa i3 OSX sd & usb connectivity. https://reprap.org/forum/read.php?4,611815,611815#msg-611815 Sat, 18 Jul 2026 11:11:51 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,611815,611866#msg-611866 https://reprap.org/forum/read.php?4,611815,611866#msg-611866
#define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,4000,500} // default steps per unit for Ultimaker
Where these are the steps/mm for X,Y Z and E axis

to

#define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,2650,500} // default steps per unit for Ultimaker
Where these are the steps/mm for X,Y Z and E axis]]> mjnurney Reprappers Mon, 18 Jan 2016 16:12:53 -0500 https://reprap.org/forum/read.php?4,611815,611815#msg-611815 https://reprap.org/forum/read.php?4,611815,611815#msg-611815
but i have a problem...

I have bought a perusal i3 with Z axis trapazoid screws but the screws won't screw in to the brass nuts to operate the Z axis - so as a quick fix i fitted M8 MS studding and built the printer up until replacement lead screws arrive.

my problem is that the Z axis calibration is wrong , 10mm travel is actually 6mm because i have studding and not the course threaded lead screws.

does anyone have firmware that is setup for 8mm studding ? or how do i change the travel parameters.

thanks all

mike.

Setup

Perusa i3
OSX
sd & usb connectivity.]]> mjnurney Reprappers Mon, 18 Jan 2016 14:53:08 -0500