1

Topic: Press On NEMA 14 Motor Fan

Posted this on Thingiverse but thought I would share here too:

I recently bought my first 3D printer via Craigslist--a Solidoodle 2 Pro. It's a cute little printer but the Devil is in the details and many stock features essentially need upgrading or workarounds. In this instance, my stock Solidoodle 2 X-axis motor was so hot to the touch that it startled me--it had neither a heat sink nor fan. The Y and Z axis motors wick away heat because they're bolted directly to enclosures metal frame.

My first fix was to super glue a box fan onto a generic part printed from Thingiverse. The fan was about twice the sizeof the motor. I wanted something smaller. I had an old ATI graphics card laying around with a 12V Sunon 125010VX-A ATI graphics card fan and having just completed the Instructables 3D printing course with Fusion 360 decided to apply my newly learned skills to designing a part around the fan and the motor.

Print this thing and screw in the fan with logo side facing out (see photos). Press fit onto NEMA 14 motor to provide constant cooling for the Solidoodle 2 Pro X-axis motor. I soldered headers onto my stock Sanguinololu board for 12V and GND. It might also be possible to splice into the extruder fan wire to provide power. The motor now is cool to the touch even during 10+ hour prints.

http://soliforum.com/i/?fAAyHEy.jpg

http://soliforum.com/i/?y1dUJik.jpg

http://soliforum.com/i/?thbXRSw.jpg

References
http://www.thingiverse.com/thing:1871741
https://www.aliexpress.com/item/Free-Sh … 03388.html
1.8° Nema 14, Size 35mm High Torque Hybrid Stepping Motor
http://www.smartautomation.com.cn/Produ … icleID=500
Good photos of the PCB where you'll connect 12V DC fan to power http://blog.rona.fr/post/2014/09/14/Add … ololu-v1.2

SD2 Pro + RH + Slic3r on Win7Ent (~Craigslist Oct. 2016 my 1st printer: upgrading & calibrating to near perfection)
- E3D V6 hotend; 30A PSU; Glass bed for ABS or Blue Tape on glass for PLA
- X-axis NEMA 14 press on fan (thing:1871741); Lawsy almost everything else; 3mm Z axis rod (thing:1868824)
- Sang board w/all headers, ATmega1284P w/OptiBoot and Marlin beta firmware; VRef tuned

2

Re: Press On NEMA 14 Motor Fan

nice work, interesting fan.

I used this one: http://www.thingiverse.com/thing:128526
uses a standard 40mm x 10mm fan

SD4 #1 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan & upgraded PSU & Mica bed heater
SD4 #2 - basically the same as SD4 #1 now... wink
Folgertech 2020 Kossel kit with reprinted plastics and top mounted bearing spool feed
Folgertech FT-5 - in progress... (sold the 2020 Prusa)

3

Re: Press On NEMA 14 Motor Fan

Yeah, that looks like a good option. I just thought this fan was too cool to let rot away in my electronics scrap pile. big_smile Being designed to cool a graphics card it's actually a very quiet and powerful fan.

heartless wrote:

nice work, interesting fan.

I used this one: http://www.thingiverse.com/thing:128526
uses a standard 40mm x 10mm fan

SD2 Pro + RH + Slic3r on Win7Ent (~Craigslist Oct. 2016 my 1st printer: upgrading & calibrating to near perfection)
- E3D V6 hotend; 30A PSU; Glass bed for ABS or Blue Tape on glass for PLA
- X-axis NEMA 14 press on fan (thing:1871741); Lawsy almost everything else; 3mm Z axis rod (thing:1868824)
- Sang board w/all headers, ATmega1284P w/OptiBoot and Marlin beta firmware; VRef tuned

4

Re: Press On NEMA 14 Motor Fan

nothing wrong with making good use of items you already have on hand. and designing & printing your own mount for it makes it even better! smile

SD4 #1 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan & upgraded PSU & Mica bed heater
SD4 #2 - basically the same as SD4 #1 now... wink
Folgertech 2020 Kossel kit with reprinted plastics and top mounted bearing spool feed
Folgertech FT-5 - in progress... (sold the 2020 Prusa)