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Extremely uneven bed?  

Active Member
Extremely uneven bed?

On my new Prusa mini the difference in bed height between the left and right side is around 0.5mm. I find that really extreme and even my old ender 3 did not have such uneven bed. I can see that on prints which are big that basically the  Z adjusts from 0.2mm to around 0.7mm between the sides as it moves on the first layer. 

I am having some first layer issues and i guess this is due to the extreme difference...

Why is the bed so uneven? Is this normal? Can this somehow be fixed by manually adjusting the bed height? Is there anything that can be done?

Posted : 28/08/2020 6:27 pm
Prominent Member
RE: Extremely uneven bed?

It's most probably not uneven bed, but your XZ axis is not perpendicular to Y. Loosen those 3 screws that connect arm with extruder to bottom part, adjust it, then tighten the screws while keepint it as straight as possible. Prop it with some piece of material (people here used stripes cut from soda drink can) if it gets skewed while tightening screws.

Posted : 29/08/2020 2:11 am