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Why is a that?  

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Cycleman
(@cycleman)
Trusted Member
Why is a that?

hello guys 

Some times I get that in the picture.is pretty annoying and I can’t understand why is that. Any ideas?!

Posted : 21/06/2021 9:02 am
fuchsr
(@fuchsr)
Noble Member
RE: Why is a that?

My money is on fingerprints on the steel sheet, perhaps combined with suboptimal Live Z.

While wiping the sheet with isopropyl alcohol between prints is good and important, it's not enough. After a while it just smears fats and other residues around, so you'll need to give the sheet a good rinse with hot water and fragrant-free dish washing soap. See this thread for a more in-depth discussion:
https://forum.prusaprinters.org/forum/english-forum-general-discussion-announcements-and-releases/satin-spring-steel-sheet-pla-prints-dont-stick-anymore/. Ignore the title, everything in there applies to all types of steel sheets.

And to get the first layer calibration/live Z right, don't use the in-built method, as the small square is hard to read. Use this instead: https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/life-adjust-z-my-way/

 

 

Posted : 21/06/2021 10:38 am
Cycleman liked
Cycleman
(@cycleman)
Trusted Member
Topic starter answered:
RE: Why is a that?

A very thanx for your answer.

sorry been late. It’s was very close to the bed.I thought that if you find the distance for the fist layer then always is the same. But when I change filement you must see again the fist layer.is that true?

Also I was the guy that with the hands unstuck the prints in order to not scratch the bed. Also I thought that with isopropyl the filament doesn’t stuck to bed because it leaves some white specks. Maybe that’s true. I never thought that the fats maybe goes around. So I make it with isopropyl alcohol…after a wash and finally with rubbing alchohol. The rubbing alchohol makes better job I think. So problem solved.

thanx a lot.

 

This post was modified 3 months ago by Cycleman
Posted : 23/06/2021 4:57 am
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