I just rebuilt a Cartesian printer updating the z axis hardware and upgrading the hot end and extruder. All seems to be working ok, but when I try to jog Z, I want to bring the head down until it's touching the bed (don't have a probe setup yet so I need to do this manually). I have found that I can only move it down to about 10 mm above the bed with the jog buttons. I can't figure out why it won't go any lower than that. There is no phyisical issue. it just stops at approx. 10 mm above the bed. I have two questions.
1) what might cause this to happen even though there is nothing physically wrong with the movement of the axis, and
2) Is there a gcode that will tell me what the printer "thinks" is the location of the head in Z. There does not seem to be any indication of the axis positions on the marlin screen. (I am not using the LCD yet).
If I haven’t screwed it up yet, I’m not thinking hard enough!
CoreXY, Titan Aero, Duet WiFi, custom design and build
Cartesian, E3D v6 hotend, Bondtech QR extruder, custom design and build
