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UM2 Single- & Dual-Head Fan-Cages (CPv9-Final)

• CPv9 Type A...The very best alternative to the original fans-cage of the UM2 (...first design). Use Type B...For the somewhat more recent UM2 with the ~11mm shorter print-head. • I could not yet verify, but CPv9 is probably fit to: UM 2 Go, UM 2+ Go, UM 2+, UM 2 Extended, UM 2+ Extended.

3D printer parts and enhancements

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• The final status CPv9 has been reached, no major updates will follow.
• CPV 9 has been improved. The improved design reduces the accumulation of air close to the construction surface. The Hotend is now not so much influenced by the cooling, an engine stop due to the temperature-monitoring should not happen again.

• CPV 9 simultaneously cools the entire printhead and your object to be printed. Are the side fan running close to 50%, then there is (... in direct comparison to the original setup) almost no risk of burns to the user from accidentally touching the printhead assembly. Even with a defect, or inactivity of the rear fan, never poses a risk to the success of your printed product. The ColdEnd will be cooled much more efficiently, this actually reduces premature wear. At the same time the object-cooling is much more targeted and therefore more powerful than before, because the cooling air stream passes much closer to the filament outlet of the nozzle. Go ahead, give it a try and experience for yourself the great difference!

• As of today, they may all call me like an idiot, but please not before they've tried this upgrade itself. Of course I had spent before this announcement, many hours with experiments. And also I myself am very surprised with respect to the performance of this upgrade, which I had not expected.

Let's talk about 12 screws:
...Because all Ultimaker 2 users should to be very attentive now...Than here comes a ultimate free upgrade for your machine...The future is now...
• What happened if...I would say the following?
• Twelve screws on Ultimaker 2 printhead will soon be obsolete!
• You do not have to buy an additional upgrade and no other optional components, so that the Ultimaker 2 works more efficiently than before!
• You will get the opportunity to produce an upgrade for your machine itself!
• With the upgrade, you get the basic preconditions for successful dual extrusion!
• You will be able to cool one or even two ColdEnds more than adequate!
• With the same upgrade, you will also be able to cool the objects to be printed better than ever before!
• With this upgrade you need for ordinary printing operations, never again the maximum fan-performance / speed!
• Your Ultimaker 2 will be able to run more quietly!
• Maintenance of the Ultimaker 2 printhead will be easier than before!

Important information:
• For more detailed information, please see (...here and in the download package) the pictures in original size.
• Information regarding enhancements and bug fixes you will find in the "Comment" section.
• Photos with the already assembled object does not show the latest design.
• Again and again: My work for you lives solely by your feedback. If something is wrong or useless in my designs, I need more information from you so that I can ever change anything. Suggestions to improve or simplify my designs and descriptions are highly desirable. So if you use my designs and parts thereof, please take a few moments to convey a little feedback.

How I Designed This:
Maybe even as a layman with little technical understanding it can be seen very quickly, the setup of all currently available UM2's needs in many ways optimizations. That is why there is CPv9 and I'm glad to have done it :-)

Materials and methods

Whatever you want to use :-)
• If you work exclusively with PLA, it is quite enough if they also make the upgrade with this material...really!
• If you also want to continue working with ABS and more specific materials, please make the upgrade, at least with ABS.
• Take 5 mm wide Kapton film and insulate so the Hotend as much as possible. If you make it as suggested then you reduce external contamination on the Hotend effectively, and an improved temperature-stability is achieved.
• The red marked areas in the design, these are necessary support elements. If you want This Design Print in PLA, then no further optimizations in the slicer are regularly required. You may want to print with very low temperatures, so that the support elements can be easily removed from the object later. For most PLA varieties I recommend a temperature in the range of ~ 195 °.

Small addition:
• The fan cages are not made of metal and much more sensitive than the originals. That is why it is a good idea to print each variant more than once to get a spare part is in stock.
- Smaller drooping deformations near the hottest zones can be easily corrected with a nail file.
• Before printing of very large objects, you need to check if risk of collision with the glass bed retaining clips. The perforated insulator bolt at the ColdEnd (Teflon-piece), allows you to slightly adjust the Z position of the Hotend. Then be sure to realign the print bed.
• The CPv9 design is slightly wider than the original UM-design, we lose a few millimeters building area. Please also indicate what adjustments need to be optimized in the Cura-machine settings.
• The UM-original cages may differ slightly in their dimensions, since it is folded sheet metal, and sometimes it might already be too bent on some machines. Of course, several measurements at different UM2s are good for adaptations so people, please join...


  • Placeholder
    C Pv9 Description
    ZIP  –  8.1 mb
    Version 1 - Dec 22, 2015
  • Placeholder
    C Pv9 Info
    ZIP  –  9.5 mb
    Version 1 - Dec 22, 2015
  • Placeholder
    C Pv9 Type A
    ZIP  –  2.1 mb
    Version 1 - Dec 22, 2015
  • Placeholder
    C Pv9 Type B
    ZIP  –  2.2 mb
    Version 1 - Dec 22, 2015


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C9e1692204e72514bcc46bbbfdc9a642?default=blank&size=40MacMA added this to the Steffen collection ago
Mini ultimakerrobotuit added this to the UM2 modding collection ago
Mini 20161105 123132Markus Domnick commented ago

Hello and yes :-)

It is of course possible to make adjustments for 40mm fans. But with identical positioning of the fans, the entire print head will need much more space. This will mainly cause problems when several objects are printed simultaneously. The slicing software used must know the new size of the entire print head so that no collisions occur. The building area will lose at least 10 mm to the left and right.

The fans of the UM2 are 10 mm high, but there are also higher and lower 30 mm fans. Higher fans have better air flow at identical or lower speed, resulting in a lower running noise overall.

Adjustments for higher fans are in my opinion the better choice, since then only some building height at the Z axis is lost.

The time required for such an adjustment is significantly lower, but I have no time for this either.

77c498ef033bf0143998c8278edf0304?default=blank&size=40donandi commented ago

Great Design!

Is it possible you make a version for 40mm fans? I use 2 40mm Sunon fans, which are very silent.

77c498ef033bf0143998c8278edf0304?default=blank&size=40donandi added this to the UM² collection ago
Mini rowiac avatarrowiac added this to the UMO Mods collection ago
F73125cec9e9a3290a2eb3ad34f852cf?default=blank&size=40cikorio koku added this to the Ultimaker collection ago
8f921f3c040c44b3226d53e1da3cf6bf?default=blank&size=40M.Schubert added this to the Ultimaker 2 collection ago
6fe419e9d9e8a893bf30f7b9d92b1f68?default=blank&size=40kesjeff added this to the Ultimaker collection ago
30fbe88468deb3ea1a8e78af2cdb843f?default=blank&size=40erikgj added this to the UM2 Upgrades collection ago
B244e60f14c1ed776a771d24ac883c2b?default=blank&size=40blazewynn added this to the UM Stuff collection ago
A5c0f84d51eb49dc910dd074c2b19dff?default=blank&size=40ChrissyP added this to the Upgrade collection ago
396e53047db5fedbd8c27c2ef7509f97?default=blank&size=40drofnas added this to the Printer Upgrades collection ago
Cb013efa08026866713ee8ea4f98a733?default=blank&size=40Sergey Fedorov added this to the Ultimaker 2 Upgrade collection ago
068031c05e579a7c8d2de5fa0f567a7d?default=blank&size=40cacomistle added this to the 3d-printer collection ago
Mini photo 18366drayson added this to the Ultimaker Original stuff collection ago
Mini 20161105 123132Markus Domnick published this design ago