PLA bubbling in the first layer of a print
I am using a Prusa i3 printer and just recently I have been having problems with the first layer. Here is a picture of what it looks like.
I have tried levelling the bed and it seems to be level. I was using a glue stick before but it started bubbling on that, so I switched to tape and that worked once but it is not working now. I wiped the tape with rubbing alcohol and it happened again.
What else can I do to get the first layer right?
Oh wow. You are way over cooking your PLA. It is bubbling because it is BOILING. I can tell you have it too hot because the lines are all blurred as if they are liquid and pooled together.
That said I can't give you details because you didn't post settings. I would start by turning the temps to 170 °C for hotend and 60 °C for plate. Also the gluestick it self should never bubble. It is unclear if that is an issue..
Either you are extruding way too hot, or your filament has absorbed too much moisture and the water absorbed inside the filament boils instantly in the extruder, resulting in a gap or "bubble" in the filament, leading to bad extrusion. What temperature are you extruding at with your PLA? Hope this helped!
If it is a water issue then their print will make crackling snap noises.
I had this problem and I had to adjust the nozzle temperature 10 °C below the minimum temperature of 190 °C!
Hi and welcome to 3D Printing.SE! Your answer is marked as a low quality answer by the community, as it is now it is more a comment on the question. Please expand the answer, e.g. explain what is the minimum temperature? Is this the minimum value that is recommended by the manufacturer?
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Content dated before 7/24/2021 11:53 AM
Mikhail Z 6 years ago
Could you provide the following values of your print: nozzle temperature, bed temperature, nozzle diameter, first layer height