Ultimaker 2 Coolboard Duct for Control Board Cooling

This is a simple and straight forward duct to aid in the cooling of the control board under the Ultimaker 2.

3D printer parts and enhancements

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Designed for use with a 50mmx15mm blower
fan. This duct covers all of the front area of the sheetmetal
ventilation holes that cover the board and lines up with all of the OEM
mounting holes provided, no drilling required.

This cooler is a work in progress and is meant to use a 24V blower
fan connecting to the J20 Jack ( Marked: Fan 19-24v ) port on the UM2's
control board. I will update this design once some additional testing has
been accomplished.

Materials and methods

- (1) 50mmx15mm blower fan.
- (2) #6-32 Button Head Screws with nuts or (2) 35mm M3 Screws using original lock nuts
- (1) 25mm M3 Screw with nuts for fastening the blower fan to the bottom of your UM2



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E7488554ef255e00c9781df6309c3054?default=blank&size=40Manuel Weissensteiner added this to the Ultimaker 2+ Mods collection ago
F77664944d69a98a1027a8327d54ec7c?default=blank&size=40my3d added this to the UM2 collection ago
2577c6bcc26416c0621103c98211fefd?default=blank&size=40Sugimori added this to the Duct collection ago
8021769cf85120b7728d09576a37b58b?default=blank&size=40Will97211 added this to the Amélioration imprimante collection ago
09a7c39effc5cb374e5b383680f12974?default=blank&size=40Владимир Слободенюк added this to the Ultimaker 2 Extended + collection ago
B1bdd12eb13152b4c559fb9c929bf259?default=blank&size=40fcristy28 added this to the Ultimaker UMO collection ago
531235c7420172ceddd698df9b5da7fe?default=blank&size=40Stephen Brew added this to the UM2 Stuff collection ago
Mini profileimageJohn added this to the Ultimaker collection ago
62cb85166dfca38c7d3c8d437383c260?default=blank&size=40Mayo77 commented ago

PLEASE READ THIS, its important!

There are a few things i wish were added to this, to make it more clear, so i will add them so it helps others.

1) All the pictures uploaded, do not show where the fan wires specifically go to, in fact most pictures make it seem the wires go to the front control panel (with the knob)...well just so you know, they dont. They are supposed to go to the motherboard , but in the picture they don't appear to go there.

2) You can connect this without removing the motherboard its the plug marked on the bottom of the board named "fan ". Or if you want a more accurate name its the J20 plug on the Utimaker motherboard, if you want to google it.

3) This is a big one. Make sure the fans red wire goes to the + plug and the black wire goes to the negative plug. I know this sounds like common sense but my utimaker 2 plug was opposite what the plug was, so i was forced to cut the fan wires and reverse them. If this is wrong all you will do is cook your fan.(glad i bought 2 because i cooked my first fan)

4) when you power up the utimaker this fan should come on and stay on at all times. So test that it working before fulling installing it...If its not turning on right away something is wrong shut it down right away and check #3 closely. You may have to remove your board because the + and neg are marked on the TOP of the board. Good luck i went through pain figuring this all out .. i hope you read this and check ahead of time.

Adcd5d2a9a69e05552934f85a33e8d94?default=blank&size=40Kari m added this to the Ultimaker collection ago
Mini moiZizon added this to the Ma collec collection ago
76652674c3ddbb662044858c1baa3c79?default=blank&size=40dintid printed this ago
Carousel thumb img 0829
Printed on:
ultimaker 2+
Mostly great. Love how you used existing screws. :-) I printed it with very thick layers 2 borders and 10% infill. Meant the printed "strut" going into the fan wasn't very good. I drilled a hole and used a screw instead.
Make an option to use a screw instead of printed "strut" as it would print much faster. Need to enlarge the "bar" holding the strut though.
65a6d5f8c94e52a3ba6543b66d529f28?default=blank&size=40lab added this to the UM 2 Updates collection ago
Mini img 0338Sepio added this to the Ultimaker 2+ collection ago
094aac0ffb6150e3cfc7b496fa1fae9c?default=blank&size=40Mastereye added this to the Um Upgrade collection ago
E97e6ecfd308bad2e382de38eee622c1?default=blank&size=40Greg added this to the Ultimaker collection ago
74637ddd9c05e8569750b756b7313729?default=blank&size=40Scherdin added this to the Um2+ collection ago
6fe419e9d9e8a893bf30f7b9d92b1f68?default=blank&size=40kesjeff added this to the Ultimaker collection ago
Mini aviator2 small png iconChris added this to the UM2 Parts collection ago
B6c4393e7cc17c631a0142e2bc4e4b2f?default=blank&size=40brycehewett added this to the Printer upgrades collection ago
Mini 2241c2348cc725c2e6cc8b960260d4b7R-Obert added this to the 3D UltimaKing collection ago
Mini dscf0675hawkbit added this to the hawkbit collection ago
Mini vfa 103 f 18f 166620 12 of 12Todd Curtis added this to the Ultimaker 2 Coolboard Duct for Control Board Cooling collection ago
92d8d4a9d4335fd7643e954f1bd5c76d?default=blank&size=40You Wish added this to the Numba 1 collection ago
Cb013efa08026866713ee8ea4f98a733?default=blank&size=40Sergey Fedorov added this to the Ultimaker 2 Upgrade collection ago
3cecd31e0b0afce49524d8d00494ddd5?default=blank&size=40rietzler added this to the UM2 collection ago
Bbdc84367bd7851476d8c363bc12c20a?default=blank&size=40twhitmer added this to the upgrades collection ago
Mini bobahelmet1Tommy Napier added this to the Upgrades collection ago
Mini 302590 236101816436351 4877763 nStephanG added this to the Ultimaker 2 collection ago
Mini profileChristopher Bray commented ago

Thanks. Is there any chance you have a STEP file for the blower fan? Just curious.

Mini nbkj7nefErick commented ago

J20 is always on, from what I remember the only pwm's are for the cooling fans and hot end. There may be a method of turning j20 on/off but I haven't looked into it any further, I can't hear the fan at all.

Mini profileChristopher Bray commented ago

So, does the fan run all the time or is there some G-Code needed to turn it on and off?

Mini profileChristopher Bray added this to the Ultimaker2 Upgrades collection ago
Mini screen shot 2013 07 15 at 6.49.36 pmErik de Bruijn added this to the Ultimaker 2 upgrades! collection ago
C810b463009f2662b7b08746377a60e3?default=blank&size=40Oceanic commented ago

Thanks again, that's exact what i'm looking for. I have applied heatsinks already, but i want a litlle bit extra cooling.

Fan ordered.


Mini nbkj7nefErick commented ago

Blame auto-correct for any goofy looking typo's in that last response, LOL.

Mini nbkj7nefErick commented ago

No problem. The fan doesn't add any noise at all from what I could tell, I sat infront of it for an hour during a print with no increase in noise. It may not be pushing as much air as a louder higher rpm fan might, but it's certainly better than what cooling the bird comes with. I started noticing browning around the solders for the xyz drive connections indicating some overheating. So is like anything that can help keep temps down during long prints. Enjoy :)

  • Erick

C810b463009f2662b7b08746377a60e3?default=blank&size=40Oceanic commented ago

Thanks a lot! With your description i've found the cooler on the german amazon and ebay site. Is the fan noisy?

Mini nbkj7nefErick commented ago

Here you go, this is the fan I'm using:

2 Pin Connector Brushless DC 24V 0.15A Turbo Blower Cooling Fan


  • Erick

C810b463009f2662b7b08746377a60e3?default=blank&size=40Oceanic commented ago


do you have a link for the fan? I only find fans in the right size for 12v or 5v.



Mini reiner 001 2Reiner Bühl added this to the Ultimaker2 collection ago
Mini nbkj7nefErick published this design ago