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Replicator Dual Fan Mount

by aubenc, published

Replicator Dual Fan Mount by aubenc Nov 15, 2012
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Summary

Quick'n dirty fan mount for the Replicator Dual.

Designed for a 40mm fan (the opening is 40.4mm side to side). The long plates (bottom and back) are 1.5mm thick the thickness for other ones (fan casing) is 1.2mm.

Unfortunatelly, the walls are thin and their thickness is not parametric, they can break easyly: "todo" list.

I'm using a taped piece of cardboard to close the thing: "todo" list.

The air exit is big, far from where is supposed to be and it is not ducted, that can have some negative impact: "todo" list.

And so on, and so on, and so on... for the "todo" list, don't be surprise if there's no much progress in the work for a while, I may even just uncheck the WIP flag and let it like this :-(

Update:

I managed to break it so I have add some reinforcement. Also added a couple of little tabs to center the thing and a sort of clip to keep it in place without the need of using tape*.

(*) Tape is still needed for the cardboard AND I think it's a good idea to use some to secure it, this time I have placed two little pads of thin double-sided tape.

The STL (v02) differs from the (green) one in the picture (hope it's fine).

Update 20 May 2014: Added a NOT tested twin fan mount.

Instructions

Print, remove the 4 little pins used as support, insert fan, have fun with the tape.

I printed mine with quite a low infill and is way too fragile! If there's a "next time" I'll give it a nice 50% or more.

I'm using an external DC power supply because the fan I had is rated for 12V, I have no idea if the "EXTRA" connections in the Migthyboard can be used and/or if the M106/M107 would work. May be somebody can post a comment (?) That would be nice ;-)

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One problem with this is that the fan is horizontal and sleeve bearing fans (most 40mm are) hate this position as they need to be vertical.

May 22, 2016 - Modified May 22, 2016
aubenc - in reply to DarkAlchemist

I have no idea about these kind of technical details, so I guess you're right.

I can also point other problems like:

  • The installation of the wires is quite a dirty job
  • You better use something like double tape to stick this thing to the print head or it may result noisy due to the vibrations.
  • I should really do something to remove the need of the cardboard.
  • ...and so on, and so on.

Anyway, this thing has been working for quite a few years now and the fan I got is still working good.
I can't tell the same from the other 3 fans in my printer, up to now I have already replaced the internal one and the other two are really noisy.

I think the only saving grace is how small they are they have a much shorter lifespan overall. A sleeve bearing 120mm in my PSU still works but is noisy due to the horizontal position. I read up on it and that is when I found out. It has to do with the oil in the sleeve bearing because vertical position the bearing is resting on a thin layer of oil but in the horizontal position the oil fall to the bottom so it wears out, or something like that. Too bad a 40mm true bearing fan is not cheap where as a 40mm regular sleeve bearing I purchased 5 for like 4 or 5 dollars (all were 24v).

Awesome fan mount - easy and prints fairly well!
Could you possibly provide the latest OpenSCAD files?
The fan I happen to have doesn't quite fit in this one, so I need to increase the square part a little bit...

Just heads up to anyone out there needing a PLA cooling fan. I've tried a few and this is by far the best, most of the others make it very difficult to level the build plate because it obscures your view of the nozzles, this works wonders, is easy to install and supports single and dual fans!

Been using this for a while now. Prints PLA great, get better results if I line the fan exhaust up with the extruder that's printing (rather than in the middle). Any plans to release a dual fan mount?

Great to know it's working, thanks a lot for the feedback!
Well there were no plans at all... anyway, I did some quick changes in the script and here it is... I have not printed this so it is untested: good luck! :)

YOU ARE THE MAN! I'm printing it out right now, i'll post results! Thanks so much!

Mounted on a Wanhao duplicator 4X without any problem.
Very fine design and work.

Thank you for sharing

Pierre

Glad to learn it printed and it works fine. Thanks a lot for the feedback!

What is the purpose of the third fan?

Cooling the material that has been lay down. Usually you don't want to do so however, sometimes this will improve quality.

One example is the part in the picture, sliced at 0.1mm layer height, the overhang is close to 75 degrees. Both where printed with the same gCode and using PLA as material.

The yellow one (build cancelled mid print) is showing a lot of big issues where the PLA is lay down "in the air". The issues are also present in the orange part, however, in that part these issues are negligible.

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