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Barnacules has another nice video tutorial about how he mounted active cooling fan on his Robo 3D printer Arduino controller board to prevent overheating. He used 3d printed mounting brackets.From video description:
You can print these brackets on your Robo3D with heated bed off to prevent a crash and have your printer fix itself! You don't really need a 2nd 3D printer :P
Get Fan Bracket @ http://www.thingiverse.com/thing:166045
Today while printing on my Robo 3D I ran into a problem where after 30 minutes it would just shut down and stop printing, after this happened 3 - 4 times in a row I flipped the printer over and felt the ramp board and it was on fire! I checked the forums and talked to some friends and they said that the ramps heat up really bad and can shut down if you run the heated bed at high temps while printing for prolonged time (known issue). The solution is to add some active cooling in the form of a fan to the Arduino board that drives the Robo 3D.Source: https://www.youtube.com/user/barnacules1?feature=watch
I used my Ultimaker 3D printer to print out a few brackets from Thingiverse.com to mount an 80mm fan to the bottom since I had clearance with the new feet I printed that raised the printer up for the Smart LCD Controller I recently installed (check that video out). The results were epic and in this video I will show you the entire process end to end to fix this problem once and for all.
The brackets were printed w/ following CURA settings on Ultimaker v1
White PLA material
0.2mm layer height
0.4mm nozzle
70c Bed
210c Hot End
100mm/sec
Cooling fan 100%
Total printing time approx 50 minutes...
