Geeetech I3 Pro C Dual Axial Cooling Fan Mount and Duct Assembly
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UPDATE:10022021: I made several modifications to the duct for the axial fans. I changed the angle and lengthened the inserts to the fans, reduced the overall profile and improved the angle so that the air better clears the nozzles. I added a support brace to fit between the two axial fan mounts at the bottom and lengthened the two push pins that go through the bottoms of the fans, into the mount, then into either side of the new brace. Short pins are for connecting the tops of the axial fans towards the front of the mount. Sidenote: The two axial fans blow a little better than I'd anticipated. I'm currently running them at 50% so I may opt for a single fan design that splits blows beneath both nozzles... I'm in the process of assembling my first dual extruder printer, the Geeetech I3 Pro C, and as is the case with all these cheap acrylic kits, am printing parts that I believe are necessary along the way. The Geeetech I3 Pro series printers do not come with a part cooling fan. Since I print primarily in PLA, often with bridging and overhangs, a part cooling fan is a must. The control board for the I3 Pro does have a single unused PWM fan header, so I'll be connecting two 5015 radial fans in parallel. I haven't found any compelling designs for mounting dual radial fans on the dual extruder for the Geetech I3 so this is what I came up with. The fan mount is held in place by the factory extruder fan. I attach the radial fans to either side of the mount with the outputs facing forward and down with two push pins each. The duct snaps into the two fans and adds more stability to the whole assembly. The push pins are undersized by .1 mm. Every printer prints a bit differently, so I'd recommend printing one pin and test fitting it in the 4mm holes. Scale it up or down and print 4 of them when you're happy with the fit. I printed all of these parts on my CTC A10S and .1mm under was a perfect fit for me. I printed the pins originally on my Anycubic I3 Mega, but they were at .2mm under for a good fit. My Geeetech I3 Pro C is a recent kit that came with a steel extruder mounting bracket. I know older versions of this kit came with a 3D printed extruder mounting bracket. As I don't know the dimensions of the 3D printed bracket, I'm unsure whether or not this model will work with it. I'm leaving this as a "Work In Progress" because, although I've printed and test fitted everything, I have no idea how well it will actually cool my prints. I may have to make further adjustments to this model once I have my I3 Pro C operational. If anybody beats me to it, please leave a comment and share your thoughts.
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