Fan Duct for Ultimaker
Description
Oct. 16 2012: I've put a new one up now which is wider and puts out more air. Also necessary for the V2 nozzle. thingiverse.com/thing:32491
Dec. 9 2011: Put another version up with about 1.5mm more clearance from hot parts.
Nov. 22 2011: Added bracing and thicker mounting strip to support the fan better. Removed some plastic from the side so that the Nozzle at the back stl would not hit the z stage at the back. Provided stl for nozzle at the back fitting.
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Provides air from the supplied fan to the filament and surrounds and mainly avoids the heater tip.
Max air by getting mounting bolt out of the way and facing more direct.
3mm clearance to hot things and platform.
I have trialled similar one at 2 to 2.5mm for a while but I do print at fairly low temps.
Instructions
Print the way the STL is facing, it has about a 35 degree overhang.
Print the spacer shorter if you already have something on top. See top view pic. This was scaled 0.4 in Z as I already had a 6mm thick Bowden Clamp thing on.
Face fan the right way around and screw onto duct with nuts at the top, back right single screw first.
Remove front mounting bolt nearest to front and put in spacer.
Screw on nuts (front one first).
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Mine melted onto the aluminum heating block, melting PLA into the heater core and thermocouple, causing a print to fail. Thankfully everything still works after I got the PLA removed, but ugh.
I was printing at 210 with the fan. I'm back to the origami duct and considering options.
I managed to melt it by printing at 230 degrees the fan off by accident. But I think it did not melt at the tip first. I think the PLA went spaghetti where it is screwed to the aluminium block, causing the fanduct to sag. Then the PLA got in contact with the hot nozzle and started to stick to it.
Nice design! But when slicing with Cura, I got one of the holes blocked. Stuff like self-intersection or non-manifold in the STL. I didn't figure out how to fix this, but it was not so hard to clean out after printing.
Great fan duct! its doing the job quite nice on my UM.
sliced and direct printed with netfabb 4.9
&
amp; marlin, used the high settings and it came out a treat, only needed to sand the small plate that is held by the thumbscrews a small amount to get it bang on, kinda sucked at the very tip of the where it goes around the hotend i think it stuck around on the same point to long - being too hot, the result is a blobby uneven head but, but its doing the job well.
only comment on the design is the 3rd mounting hole on for the fan, (top one on its own) was a bit impossible to get my hex screwdriver in there to turn the head of the bolt, also it needs to be in 3/4 of the way before it straitens out enough to bite.
but none the less, Thankyou for the design!
-Makka
Thanks Makka
Yeah I've notice a few prints are a bit blobby at the tip due to putting hot plastic on top of hot plastic. Would need to slow the print down at least at that section to avoid that. That screw was a bit tricky but it needed to be tight there in order to get as big and straight as possible air flow from the fan.
Owen
How hard would it be to modify to accommodate a 40mm fan w/30mm-between-screw mounting points?
I love this fan mount, works great for the last couple of months, no melting issues.
Great design
Works perfectly. it directs the air to the right spot.
very nice model owen, thank you! -And no problems with the heat at the hot end so far... ;)
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oh, thank you. I don't think I have ever seen a 50mm. fan in the wild.