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RoBo3D Feet Remix with 92mm RAMPS fan

by galaxius, published

RoBo3D Feet Remix with 92mm RAMPS fan by galaxius Mar 17, 2015

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My 40mm RAMPS fan would vibrate through the RAMPS clip on fan mounts and amplify through the base of the printer, most annoying. So I remixed Mike Kelly's 10mm feet to integrate a mount for a Noctua 92mm low profile (14mm) fan. It works awesome, so quiet with no vibration.

I also remixed all the screw holes for M3 bolts. the outer hole is 3mm and the inner hole is 2.5mm. Use a drill to make sure the outer 3mm hole is 3mm so the M3 bolt slips through and tap the inner 2.5mm hole. Using the foot as a guide by putting it on the printer, create a center divit in the base of the printer's corner using a 3mm bit (just enough to leave a tiny dint for the 2.5mm bit to center on DO NOT DRILL THROUGH with the 3mm bit). Remove the foot then complete the hole with a 2.5mm bit and tap it. Install the foot and a 10mm or 12mm M3 bolt. I only use 1 bolt per foot but there allocation for 2.
NOTE: 10mm M3 bolt(s) are required in the PSU corner as there's no clearance for a 12mm M3 bolt.

To mount the fan tap the 3 2.5mm holes of the mounting bracket and attach the fan with 20mm M3 bolts, the bolt should not protrude through the bottom. The bracket allows 6mm clearance under the fan for air intake.

For wiring (details are for the Noctua PWM fan) you can cut the fan's plug and connect a female jumper plug to the black (negative) and yellow (positive) wires (the other wires are unused), or if you're like me and want to keep the fan plug intact make a jumper lead instead. The jumper's black wire goes to the fan's black, and the jumper's red wire goes to the fan's yellow. Make sure you secure other wires out of the way of the fan, kapton tape did the trick for me.

NOTE: There's 2 versions of the fan mount foot where v4a has the front bolt tab chamfer 3mm closer to the corner to allow more room for my LCD mounting bracket. There's also 2 versions of the power plug foot. My plug must be different to Mike's as I needed more clearance (I haven't printed or test fit v2 as I modified Mike's with a Dremel but decided to create v2 for other users). Print 1 "fan" foot, 1 "plug" foot, and 2 normal feet.

That's it, quiet and cool. Printed in PLA with 2 perimeters, 3 top/bottom layers, at 0.3mm layer height, with 25% honeycomb fill (better strength than rectilinear), sliced with Slic3r.

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Okay so which file should I print? I know I need the one with 92mm fan support file. The other 3 is which files?

Jan 18, 2016 - Modified Jan 18, 2016
galaxius - in reply to airbiscuit

You will need:
2 x Lifter_Feet_10_M3_repaired.
1 x Lifter_Feet_Plug_10_M3 or Lifter_Feet_Plug_10_M3_v2 depending on the clearance your printer's plug plate requires.
1 x Lifter_Feet_10_M3_92mm_fan_support_v4 or v4a depending on the clearance you need at the front of your robo if you have a controller mounted to the front like I do. If you don't have anything mounted to the front right of your machine it doesn't really matter which one you print, though v4 (I think) is the more symmetrical looking one of the 2 versions.

I hope that helps.

Made mine today and it works GREAT!!!! My XXL controller was messing up and i thought it might be the RAMPS overheating. Once i put the new fan on my XXL was perfect.

Awesome, good stuff. Could you upload your Make please?

By any chance you can give me the link of that fan you used?

Dec 27, 2015 - Modified Dec 27, 2015
galaxius - in reply to airbiscuit

It's the Noctua low profile 92mm fan (NF-A9x14). I'm in Australia but you should be able to get it from whatever country you're in.
https://www.pccasegear.com/products/21675

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