Searching for a better fan duct, i found this this (thx to xander1)
https://www.thingiverse.com/thing:4124587
The initial tests weren't bad, but the airflow didn't fully reach the rear of the model.
So I copied the design and gave it a bit more length and air baffles to get more air behind the model. Thicker walls give the part a little more strength against the heat.
In addition, I added another holding element for the original fan bracket (Prusa R4 / R5 / R6 Part).
Since the PINDA holder tends to lower itself at high printing temperatures, I added a reinforced notch to support the probe.
My parts are printed from Prusament PC Carbon Fiber to withstand higher temperatures. It prints great !
I think the ASA is sufficient for normal prints with PETG and PLA.
It is best to print 3 or 4 perimeters, much infill ~50% and supports at the air outlets as shown in the picture (no supports for PC Carbon Fiber needed ! )
The fan mount could be print with PETG.
You need:
1x M3 Squarenut (use the existing one)
1x M3x8mm
1x M3 Nut (use the existing one)
FLOWSPLITTER Version added >> Flowsplitter: https://www.prusaprinters.org/prints/124051-print-fan-flowsplitter-mk3-mk3s-mk3s-and-many-othe
Update 04.03.2021
added a MK3S+ Version
Update 18.08.2021
renamed the MK3S+ file and updated the file to the latest Iteration (only small changes for PC Â Carbon Fiber printing).
Update 11.01.2022
new lower version added 1.5mm deeper with or without silicon sock.
some new pictures PC Carbon Fiber Parts after 6 month of many printing.
the mk3s+ (R6) parts works on mk3s (R5) too !Â
Update 22.01.2022
renamed Files the “+” will be removed in downloadable zip files O_o
added a lowered 0.5mm and 1.0mm VersionÂ
the mk3s+ (R6) parts works on mk3s (R5) too !Â
Update 31.01.2022
FlowSplitter version added - Flowsplitter ? See Link in Description
Update 21.04.2023
added a 2.5 Version
Print instructions
Print in PC or ASA with supports shown in the picture OR in Prusament PC Blend Carbon Fiber Black without supports and crazy good quality - see the new pictures !
Much infill ~50% and 3 or more Perimeter to make the duct more Heatstable.
Prusa MK3S and MK3S+ Fan Duct with PINDA Support
by KalleKnall · original on Printables ↗
3D Printers / Prusa Parts & Upgrades
♥ 416⬇ 3.4k🖨 56 prints
Print profiles
fan_duct_mk3s.stl
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fan_mount.stlDEFAULT
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fan_duct_mk3s_plus.stl
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fan_duct_mk3s_plus_low_1.5mm.stl
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fan_duct_mk3s_plus_low_1.0mm.stl
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fan_duct_mk3s_plus_low_0.5mm.stl
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fan_duct_mk3s_plus_low_1.0mm_split.stl
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fan_duct_mk3s_plus_low_1.5mm_split.stl
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fan_duct_mk3s_plus_low_0.5mm_split.stl
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fan_duct_mk3s_plus_low_2.5mm.stl.stl
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fan_duct_mk3s_plus_low_2.5mm_split.stl
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