"bubbles" on first layer
I am frequently getting "bubbles" on the first layer, which sometimes are big enough to ruin the print.
E.g.:
The sheet was cleaned with warm water + dishwasher detergent before the prints. It happened on both sides of the sheet.
- using prusaslicer default settings, latest firmware (even tried the alpha2, no change)
- filament: prusament PETG (dry) - tried two different colours
- happened both with brass and steel nozzles, which were carefully cleaned before printing
What might be causing this, and how to fix it?
Best Answer by Diem:
Those look like fingerprints - but if you've washed with detergent then they're not plain fingerprints...
What potential contaminants do you use in the same area; what might have been transferred on your fingers or (do you have children?) other's fingers?
Cheerio,
RE: "bubbles" on first layer
Try using PLA , then you should know, printer bed or filament.
RE: "bubbles" on first layer
Also a bigger bed temperature would help
Those look like fingerprints - but if you've washed with detergent then they're not plain fingerprints...
What potential contaminants do you use in the same area; what might have been transferred on your fingers or (do you have children?) other's fingers?
Cheerio,
RE: "bubbles" on first layer
I'm with Deim, your bed plate has seen better days. If cleaning does not work throw it out and use a new one. I do it all the time. Saves a lot of trouble and lost time trying to figure out what went wrong.
Tom
RE: "bubbles" on first layer
Thanks all. I did a very though clean, including boiling water, and used nytril gloves throughout. Then did a test (1 layer, basically covering the entire bed), and things seem good now.
My fingers must have been very greasy, or the bed very dirty, or maybe both!
RE: "bubbles" on first layer
You say that the two sides of the plate have this issue. Is this a regular and repeated pattern on both ( "bubbles" always on the same spots ) or it's a random occurrence ?,
Yours is a rather weird problem, Prusa satin plates are very tough and long lasting. The plate has been carefully cleaned and there're no visibly damaged spots ( at least, that we can see ). I'd follow @John Lindo advice, printing the same part in PLA and see what happens. PETG is not a friendly filament.
BTW Have you tried to use glue stick, 3Dlac or similar ?. It shouldn't be needed, but it helps with adhesion issues.