<p>Cold/Luke-Warm pulling can cause damage and wear to the hot end, and should only be used in cases where you suspect there's a jam in the nozzle.</p>

<p>Pulling the filament out at a few degrees above its normal printing temperature and pulling quickly is what I use, and what I've seen other's also say, and the procedure most machines use.</p>

CC BY-SA 4.0
2019-08-29T23:40:11.387Z
2019-08-29T23:40:11.387Z
craftxbox
<p>Since retractions above 4&nbsp;mm can cause jams due to plastic sticking to the cold half of the metal print head, what's the best way to avoid jams when swapping filaments? </p>

<p>Cool down and yank out, rapid pull out while melted, pull out at partial heat but not completely melted, or something else?</p>

CC BY-SA 4.0
2019-08-29T07:02:29.430Z
The best solution is to **prevent that the filament clogs the hotend**, this means that it may never "mushroom" in the throat too high up that only heating for a prolonged time (and e.g. disabling the cold end fan) for heat to reach that part to melt it would unclog your hotend. Pulling out while hot looks as the most promising solution, if the filament deforms and cools, it is very hard to get out (from experience).
0scar
<filament><hotend><retraction><change-filament>
What's the best way to pull out fillament from an all metal print head
Mr.UNOwen
# What's the best way to pull out fillament from an all metal print head

(Asked by: username_0 on 2019-08-29)

Since retractions above 4 mm can cause jams due to plastic sticking to the cold half of the metal print head, what's the best way to avoid jams when swapping filaments?

Cool down and yank out, rapid pull out while melted, pull out at partial heat but not completely melted, or something else?

**Tags:** filament, hotend, retraction, change-filament
> **Comments:**
> **username_1**: The best solution is to **prevent that the filament clogs the hotend**, this means that it may never "mushroom" in the throat too high up that only heating for a prolonged time (and e.g. disabling the cold end fan) for heat to reach that part to melt it would unclog your hotend. Pulling out while hot looks as the most promising solution, if the filament deforms and cools, it is very hard to get out (from experience).  

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## 1 answers

### Answer by username_2 on 2019-08-29. Score: 1 | Accepted answer

Cold/Luke-Warm pulling can cause damage and wear to the hot end, and should only be used in cases where you suspect there's a jam in the nozzle.

Pulling the filament out at a few degrees above its normal printing temperature and pulling quickly is what I use, and what I've seen other's also say, and the procedure most machines use.


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