Extruder Motor Cooler MK3S/+
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Estimated printing price per file
€4.69 – €5.74 net (excluding VAT)
For file: Extruder Cooler MK3S A4x10 with threads_0.2mm_PLA_MK3S_5h54m.gcode
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Average indicative estimate: €5.22 excluding VAT (range midpoint).
- Weight reported by the author
- 51 g
- Print time reported by the author
- 5.9 hr
- Source material
- PLA
- Estimate material
- PLA
- Estimate printer
- Bambu Lab P1S - 0.4 nozzle
- Estimate process
- 0.20mm Standard
Indicative estimate for the selected file only, based on the author’s weight and print time. File variants are not added together. The final price is calculated after file analysis.
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Extruder cooler with threads for bowden tube.
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution
This is a remix of this:
https://www.prusaprinters.org/prints/72931-extruder-motor-cooler-mk3s-by-simonpk
where I have added threads for the PTFE-tube mount as I didn't want to glue it on.
The reason I wanted an extruder motor cooler is due to my printer being in an enclosure and when printing with ironing it caused the gears to chew through the filament, causing a clog in the PTFE-tube.
Threads:
The threads are M6x0.8.
Fan:
It is made for the Noctua A4x10 fan.
Connection:
Here I would recommend cutting the cables and crimping a connector to them as I have done in one of the images. This will make 2 things possible:
1) You can quick release the extruder cooler and take it off, it would be really annoying to undo everything each time.
2) You can have thinner cables to route through the sleeve.
Another reason that you might want to have thinner cables is that the thick cable from the Noctua fan gets squeezed between the extruder and the frame when at max Z height.
The fan is then connected in parallel to the left cooler fan. Since the fans draw around 50mA each this should be fine. I also have a third fan wired up in parallel to these too, so it should be fine. Note that the startup current is higher than the continuous draw, but 2-3 fans in parallel should be fine. I have 3 fans, but I take no responsibility for any damages.
The reason it is connected to the left cooler fan is that I don't want it on at all times, only when actually printing.
Printing:
I recommend printing it standing on its nose and having supports everywhere. You could probably paint them on, but I'm lazy. This made for easier removal of the supports than printing it laying down.
Layer height: 0.2mm
Supports: Everywhere
Material: PETG is recommended, but PLA might work.