<p>Turns out I was just ruining the PETG parts that held the extruder gears. They didn't really melt but got soft and crept really badly. I replaced them with new parts everything was fine.</p>

CC BY-SA 4.0
2024-03-20T04:00:27.647Z
2024-03-20T04:00:27.647Z
TreeBarkEater
<p>If you are experiencing overheating, consider to provide input/output airflow to the enclosure for the controller board and for the power supply. I've seen elsewhere on the 'net (forgotten locations) of Prusa printers with DIY extensions to the cables that are used in those components, allowing them to be located outside, with ambient airflow.</p>

CC BY-SA 4.0
2022-03-06T22:14:49.670Z
The power supply is outside the enclosure but not the board.
TreeBarkEater
CC BY-SA 4.0
2022-03-07T00:45:28.193Z
I think you have at least a partial answer in your comment.
fred_dot_u
CC BY-SA 4.0
2022-03-06T21:06:50.667Z
2022-03-06T21:06:50.667Z
fred_dot_u
<p>On the last couple of polycarbonate prints with my Prusa, one or more layers have been completely skipped (i.e. no material extruded). The rest of the print is fine save some minor warping. I'm printing in an enclosure that gets up to ~60 °C with the power supply outside the enclosure. I'm also printing out of a dry box with a fairly long bowden tube. I suspect it has something to do with overheating because this doesn't happen when I print without an enclosure.</p>
<p>I cracked the print in half just to take a look in between the layers.<a href="https://i.sstatic.net/gg8H8.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/gg8H8.jpg" alt="Side view" /></a></p>
<p><a href="https://i.sstatic.net/eP3C1.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/eP3C1.jpg" alt="Bottom piece" /></a><a href="https://i.sstatic.net/fAmPg.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/fAmPg.jpg" alt="Top piece" /></a></p>

CC BY-SA 4.0
2022-04-06T21:57:44.190Z
If you print the same thing twice, does it skip the same layer or random layers?
ChinchillaWafers
CC BY-SA 4.0
2022-08-08T02:05:14.863Z
60 deg C in an enclosure seems really hot, can the rest of the parts in there handle that?
YetAnotherRandomUser
<prusa-i3><adhesion><underextrusion><filament-jam><polycarbonate>
Prusa i3MK3S+ layer skip with polycarbonate (overheating?)
TreeBarkEater
# Prusa i3MK3S+ layer skip with polycarbonate (overheating?)

(Asked by: username_0 on 2022-03-06)

On the last couple of polycarbonate prints with my Prusa, one or more layers have been completely skipped (i.e. no material extruded). The rest of the print is fine save some minor warping. I'm printing in an enclosure that gets up to ~60 °C with the power supply outside the enclosure. I'm also printing out of a dry box with a fairly long bowden tube. I suspect it has something to do with overheating because this doesn't happen when I print without an enclosure.

I cracked the print in half just to take a look in between the layers.[![Side view](https://i.sstatic.net/gg8H8.jpg)](https://i.sstatic.net/gg8H8.jpg)

[![Bottom piece](https://i.sstatic.net/eP3C1.jpg)](https://i.sstatic.net/eP3C1.jpg)[![Top piece](https://i.sstatic.net/fAmPg.jpg)](https://i.sstatic.net/fAmPg.jpg)

**Tags:** prusa-i3, adhesion, underextrusion, filament-jam, polycarbonate
> **Comments:**
> **username_1**: If you print the same thing twice, does it skip the same layer or random layers?  
> **username_2**: 60 deg C in an enclosure seems really hot, can the rest of the parts in there handle that?  

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## 2 answers

### Answer by username_0 on 2024-03-20. Score: 0 | Accepted answer

Turns out I was just ruining the PETG parts that held the extruder gears. They didn't really melt but got soft and crept really badly. I replaced them with new parts everything was fine.


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### Answer by username_3 on 2022-03-06. Score: 0

If you are experiencing overheating, consider to provide input/output airflow to the enclosure for the controller board and for the power supply. I've seen elsewhere on the 'net (forgotten locations) of Prusa printers with DIY extensions to the cables that are used in those components, allowing them to be located outside, with ambient airflow.

> **Comments:**
> **username_0**: The power supply is outside the enclosure but not the board.  
> **username_3**: I think you have at least a partial answer in your comment.  

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