Issue with my 3d printer (again)

Hi again,

Have som issues with my 3d printer, that when I do a G28 to home it, when it does the Z the “dance” with the probe detecting that it gets close too the bed without problem, the problem is that when it is done, it just stops with the nozzle down at the lowest point.

It just looks very dangerous to use the printer like that.

Short video that shows what I mean.

https://youtu.be/yGda65OW5qw

There is a safe home z parameter. I think that also affects the final height. It looks like it honed Z first, which seems dangerous, if the probe was off the edge when it started.

I have an ender 3 with the bltouch and it runs the same… it first raises the z (for clearence) then homes x and y. Then it centers the head and homes z. As long as your probe is not below the nozzel you should be fine…

An easy fix is to just add G1 Z10 after the G28 in the startup script.

1 Like

If you are compiling your own firmware the. Make a change in the advanced config file. In the homing section there is a setting for z height after homing. I think. If you are not compiling then just do what Jeffe suggested.