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Why do i get occasionaly shifts?  

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pingu
(@pingu)
Estimable Member
Why do i get occasionaly shifts?

I dont get it... a few layers after it shifts perfectly back. I hat about 20 parts on it and one had adhesion problems, possible that the extruder crashed there. But why doesnt crash recognition work?? 

I have ocasionaly this problems, but most of the prints dont. I adjustet the belts about a month ago

I print only petg, filament fm ( wich is original, not rebranded prusa(not prusament) petg

Posted : 16/12/2019 11:41 am
Dave Avery
(@dave-avery)
Honorable Member
RE: Why do i get occasionaly shifts?

i suspect crash recognition _did_ work but the re-home after the crash hit a slightly different zero location ( known issue with switchless homing) and the on a second crash the re-home found the original zero location

Posted : 16/12/2019 5:46 pm
rmm200
(@rmm200)
Noble Member
RE: Why do i get occasionaly shifts?

Can't tell from the picture - but how is part adhesion to the bed? A corner lifting up could cause your crashes.

Posted : 16/12/2019 9:19 pm
pingu
(@pingu)
Estimable Member
Topic starter answered:
RE: Why do i get occasionaly shifts?

I took the half damn printer apart. Checked pulley screws, as recomended. Greased the bearings, tightened the belts and much more. Then i figuered out what was wrong.

 

2 months ago i changed my thernistor on hotend. Begause fail throught blob. Well, the very first cable tie right at the extruder showed downwards witg its clutch... shame on me.

 

In someprinting ocassions it crashes against the housing of the bed cable... i think that was the peoblem. Because sometimes i has y shifts, some times x shifts.... it would be a damn good explenation for this behavior

Posted : 16/12/2019 9:34 pm
rmm200
(@rmm200)
Noble Member
RE: Why do i get occasionaly shifts?

Look at it this way - now your printer works - and the bearings are greased! Win all around.

Posted : 16/12/2019 10:39 pm
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