Printable 'spare' Ultimaker fan holder
by BlueBot, published
Although it does not deliver a blast of air just to the tip of the nozzle, it does give a massive flow rate spread over a very useful footprint. Thus it cools the already printed plastic which is often missed by more finely aimed blasts of air when the head is moving at speed.
My goal was to design a copy of the supplied UM fan mount that is printable in one piece - without the use of support material.
Designed for when you have crashed and broken the original by running it into the latest Yoda test print!
Or alternatively use it to print a spare and show the rest of us up with your forethought.
There are two versions
The 'Printable UM fan holder' is designed to be bolted in place using the original hardware.
Then we have 'The Florian push fit variant' a special request version that just pushes into place. ( Florian, Thanks for the neat idea and subsequent testing.)
Both print well with either the High or Ultra profile supplied in the Ultimaker version of Netfabb.
They print without a cooling fan (if you've already broken the original) but obviously they will look better printed whilst you still have a fan available. So if need be, print the fan holder twice ie the emergency rough version and then the neat permanent replacement
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The walls are extremely thin in places. I had to print with 0.32mm walls, which on my UM this is at times problematic. Anything more than 0.32 and Cura and KISSlicr started to skip portions of the walls. I also used some supports, because I wasn't sure how it would go near the top. I might try slowing it down and going for a 0.1 or 0.15 layer instead of 2, if I need to reprint it.
I printed one, but with enlarged spacing between the inner hole (for some reasons my long screws are further apart). Just one problem: it is almost impossible to hold a nut in place on the inside, let alone tighten it. Maybe I should have printed the push-fit variant - doesn't the heat transfered via screw loosen it?
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2. Select either the High or Ultra profile along with the matching 'FILLED OBJECT' quality setting.
3. Print it, then clean the bolt holes if needed (not too much cleaning of the front bolt holes if its the Florian special).
4. Fix it in place and get back to printing.
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