PrintrBoard compact cooling enclosure

by kharar, published

PrintrBoard compact cooling enclosure by kharar Aug 13, 2013
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A protective case for the PrintrBoard Rev.E
Provides cooling of the drivers through simple ventilation ducting
Made for MAXbot (see http://labitat.dk/wiki/MAXbot)

OpenSCAD file is provided in case you want to fiddle or modify to fit other revisions of PrintrBoard

Version 2 provides a wider and deeper cutout for the USB plug plus room for a ISP programming header as well as a few other minor changes.


Slice & print at around 0.15mm layers and hexagonal infill of 20-25%

Attach heatsinks onto the stepper drivers

Attach a 4010 fan and a "fan grill 40mm" (just search for it here on thingiverse: http://www.thingiverse.com/search?q=fan+grill+40mm) with four M3x15's screwed directly into the case

The enclosure can be attached to it's surroundings by cable ties through the four rectangular holes in the bottom part

Extra notes:

  • The slot hole for the microSD might be a bit too small, but it's easy to cut away approx. 1 mm from the top part of the enclosure to make a better fit for the card.
  • Also you might want to attach a piece of tape to the rear of the microSD card so it will be easier to pull out.
  • Hopefully next version of the PrintrBoard will feature "push-to-eject"


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I have been working on the design of a ExtrudrBoard casing for double or triple extruder systems. Expect an update to be released soon!

I have noticed some Micro-USB plug ends are different length, they seem to differ in about 1mm making it hard for the short plugs to properly reach the board..

Some day I might change the layout to allow the use the short plugs without cutting or carving

Does this design leave access to the reset button and reset pins?

In deed it does (for the button that is). I usually fit the hole with a short domed hexnut M3 screw and put a nylock nut on the inside to prevent it from falling out. Then just press the screw from above to reset...
If by reset pins you mean the 6-pin ICSP connector next to the u-SD slot, then those are also accessible.

Great box, had to bend the transistors over though to get it to fit over the board.

Also had to thin down the dividing wall to give a little side clearance to the transistors so lid would align with base.

You might be interested in this: http://www.thingiverse.com/thing:608990

PrintrBoard Rev D Enclosure
by usafhas

Well true, the enclosure were ment to fit on a revision E board (smd transistors) so I actually never considered this while designing the thing.
Thanks for the feedback :-)

My Printrboard seems to fit just fine, but my 40 mm fan (40 mm measured between the mounting holes for each side) is way too big.

It is my understanding that a 40mm fan has 32mm between the holes and is 40mm along the sides.
So I guess your 40mm fan is actually 50mm...?

You are correct. I did not know that. I guess I will just have to source a real 40 mm fan then. Thanks for a nice enclosure!

You're welcome, hope you'll enjoy :-)