Waves in print? I dont want to surf, please HALP!

[viitapiru 0]

Hi! I'm bit of a newbie, so please dont hurt me (bad).

 

I'm trying to print PLA to Glass plate. Glass has some hair spray in it. Leveling "OK" not good but, cant get better with this printer.

Plate temp 42c extruder temp 200

 

Software Cura, printer Creality CR10-S

 

What is going on here? First time that i see this kind of behavior?

[GregValiant 1,248]

That happens once in a while and I never figured out why.  It's like there are bubbles under the plastic.  I've washed the glass, re-coated with hair spray, and using the same roll of PLA it didn't do it.  I've heard people blame it on the PLA having absorbed moisture but I don't know about that since the same roll printed fine for me the next time.

 

Then another day it would do it on freshly cleaned glass with a different roll of PLA.  Like I said, I never chased it down.

[viitapiru 0]

Somebody got a pretty good idea on this one. He suggested that there is small "loose" on printer frame and extruder can move little. I have to check it out when 2 days lasting print is over. Somehow moisture in PLA sounds like joke to me. Perhaps if you store it in water or something like that..