Printer running into negative values due to mesh calculation
Hello, running into this error:
Move out of range: 216.775 20.491 -0.007 [1385.478]
(With alternatig values). The printer does not yet have tilt adjust and a really crappy printbed, which I did not yet have the time to fix.
![No description](https://cdn.answeroverflow.com/1119738910965252278/image.png)
13 Replies
What printer is this? Are you using Rat-OS?
Its an ancient bq witbox with ratos and PAM
Can I just set position min for the Z-axis to -1?
That makes no sense, you are saying the probe is below the bed
Not the probe, but after mesh calculation the mesh requests negative z-values. Hence the SW tells you no because negative Z-values are not defined. Hence if I just define Z-min to be -1 the SW should accept these values.
By setting the z-min to a negative value you are saying the probe is below the bed. I am not sure the software will even allow you to do that.
It did. The probe is not below the bed, the problem is: The first layer is .4mm thick, however the Mesh has a deviation of more than .4 in both direction causing the printhead to move below z = 0 which causes the printer to stop printing. Now that Z min = -1 these values are still defined. Probe is still defined to be at 0.
You're thinking of z_offset i think 🙂
Probably
Yeah, essentially the printbed is so crappy that after mesh calculation the deviation may be larger than the thickness of the first layer. With the change the printer eats these values regardless.
the default is -5 in RatOS actually
Can't properly set z_offset without that in the beginning
And i doubt many actually change it afterwards
My RatOS configuration is everything except standard, I never defined a minimun Z-Value. -1 Seems to work fine but thanks for the info will think to increase it to -5 whenever there is a need to do so.
If it works with -1 keep it at -1, -5 just gives you more room to drive the bed into the nozzle or vice versa 😂
Enjoying myself the beatiful "printbed has been violated by nozzle" look on my prints.