<p>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. </p>

<p>That said I can't give you details because you didn't post settings. I would start by turning the temps to 170&nbsp;&deg;C for hotend and 60&nbsp;&deg;C for plate. Also the gluestick it self should never bubble. It is unclear if that is an issue..</p>

CC BY-SA 4.0
2017-02-12T06:57:03.113Z
2019-12-18T20:00:48.453Z
2019-12-18T20:00:48.453Z
MakerModder
<p>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!</p>

CC BY-SA 3.0
2017-03-13T13:41:00.297Z
If it is a water issue then their print will make crackling snap noises.
MakerModder
CC BY-SA 3.0
2017-03-13T08:23:30.157Z
2017-03-13T08:23:30.157Z
raviriley
<p>I had this problem and I had to adjust the nozzle temperature 10&nbsp;&deg;C below the minimum temperature of 190&nbsp;&deg;C!</p>

CC BY-SA 4.0
2019-12-18T20:11:18.947Z
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?
0scar
CC BY-SA 4.0
2019-12-18T19:12:37.530Z
2019-12-18T20:01:26.423Z
2019-12-18T20:01:26.423Z
Rod
<p>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.</p>

<p><a href="https://i.sstatic.net/ShfZn.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/ShfZn.jpg" alt="First extruded layer on Prusa i3"></a> </p>

<p>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. </p>

<p>What else can I do to get the first layer right?</p>

CC BY-SA 3.0
2017-02-13T10:12:53.090Z
Could you provide the following values of your print: nozzle temperature, bed temperature, nozzle diameter, first layer height
Mikhail Z
<prusa-i3>
PLA bubbling in the first layer of a print
user3557707
# PLA bubbling in the first layer of a print

(Asked by: username_0 on 2017-02-11)

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.

[![First extruded layer on Prusa i3](https://i.sstatic.net/ShfZn.jpg)](https://i.sstatic.net/ShfZn.jpg)

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?

**Tags:** prusa-i3
> **Comments:**
> **username_1**: Could you provide the following values of your print: nozzle temperature, bed temperature, nozzle diameter, first layer height  

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## 3 answers

### Answer by username_2 on 2017-02-12. Score: 2

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..


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### Answer by username_3 on 2017-03-13. Score: 1

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!

> **Comments:**
> **username_2**: If it is a water issue then their print will make crackling snap noises.  

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### Answer by username_4 on 2019-12-18. Score: 0

I had this problem and I had to adjust the nozzle temperature 10 °C below the minimum temperature of 190 °C!

> **Comments:**
> **username_5**: 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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