End piece of first layer calibration looks odd after MK3 to MK3S. Belt Tensioning issue?
 
Benachrichtigungen
Alles löschen

End piece of first layer calibration looks odd after MK3 to MK3S. Belt Tensioning issue?  

  RSS
Sam
 Sam
(@sam)
Eminent Member
End piece of first layer calibration looks odd after MK3 to MK3S. Belt Tensioning issue?

Some time ago I upgraded my MK3 to MK3S and noticed that my first layer calibration does not look good (not for the Z height, but for the X axis). Overall I experienced that my prints became worse after the upgrade. (I do not blame Prusa or MK3S, I simply assume that I re-assembled something worse than I did before 🙂 )

Now unfortunately I did not start gathering the first layer calibration pieces from my previous steps that's why I cannot compare the results.

Attached is a first layer calibration piece. Notice that the surface is not smooth but again I can't remember whether the first ones looked the same.

What disturbs me more is the imprecision on the left edges. Now during a print there will be a perimeter there that might obscure or remove this pattern but I asked myself whether this is a sign of something that I did not assemble very well. I am aware that this is not a X/Y calibration model, I am just curious whether first layer cal looks similar for all of us.

Any hints on that are appreciated 🙂

Attachment removed
Veröffentlicht : 07/07/2019 9:22 am
--
 --
(@)
Illustrious Member
RE: End piece of first layer calibration looks odd after MK3 to MK3S. Belt Tensioning issue?

Looks like over extrusion (Live-Z a bit low).  And, the left side jaggedness indicate that part of the bed has a fingerprint.

Veröffentlicht : 08/07/2019 6:14 am
Peter M
(@peter-m)
Noble Member
RE: End piece of first layer calibration looks odd after MK3 to MK3S. Belt Tensioning issue?

Oils on rail etc, maintenance?

Do a calibration of z-axis

Pid calibration with 210 temp.

 

Clean bed. This is very important for a 3d printer!!!!

z-layer a little higher, and try again, and higher again en test again,  this is also very important!!!, try higher or lower, different filament.

 

Veröffentlicht : 08/07/2019 11:18 am
pierrealain_dedome
(@pad31)
New Member
RE: End piece of first layer calibration looks odd after MK3 to MK3S. Belt Tensioning issue?

Hello

I had the same issue after updating to last firmware version whereas it was fine on previous version.

I 've started to set the Z higher which did not help a lot,  then dissemblable my bed and I finally set the value I had before updating the firmware

With this value  the first layer of my Prints are perfect whereas the end piece of the calibration is like yours. 

It may be a "bug" on the Z calibration introduce by last firmware , hope the support will investigate

Veröffentlicht : 09/07/2019 1:07 pm
Teilen: