Solidoodle Fan Mount and Duct

by lawsy, published

Solidoodle Fan Mount and Duct by lawsy Sep 20, 2012
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Derived from Ian Johnson's fan duct:


Mount changed to accept magnets and adjustment screw to fine tune mounting angle.


Full installation instructions can be found here:


  1. Print duct and mount. Full credit to Ian Johnson for designing the originals.

  2. Use a vice to push in 1/4 x 1/4 inch magnets.

  3. Use acetone or glue to attach mount to duct.

  4. Drill out hole on mount to accept screw of your choice. Insert screw, cutting a thread in the plastic as you go.

  5. Insert 40mm fan and mount on Solidoodle extruder. Adjust screw to get duct parallel to bed.

  6. Wire up fan and enjoy!

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is this for the original solidoodle extruder?

My solidoodle 3 melted this, I almost didn't catch it in time as the fan was blocking the hot spot from view...

Having problems slicing this with slic3r. Anyone having issues?

me too, some surfaces are disapearing

any chance this could be modified for the new square hotends? and it seems there is a screw keeping me from being able to install it high enough up anyways :(

Any source where I can purchase a couple of magnets? The only amazon link I've found is for 20 magnets.

Also, this is designed for cylindrical magnets, right?

I wasn't able to print this because the inner circle wouldn't stay on the bed. What should I do to print this or could someone print this for me? 

The slots I had cut near the top of the duct were to throw a little extra air at the top of the hot end,  I haven't tried running it with a thermocouple up there yet, to see what the difference is.  I thought that for ABS, a higher temperature extrusion would help keep the strength up, and having the airflow up top would help protect the PEEK.

It might also improve PLA prints, since you generally want a shorter melt zone.