QU-BD Extruder CAD

by coelestinian, published

QU-BD Extruder CAD by coelestinian Dec 26, 2012



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Another (more accurate) model of the QU-BD MBE extruder. Useful for designing minimalistic MK7's and Mendel x carriages.


Attached are zip files of the SolidWorks models, STEP files, and original QU-BD stls (from http://www.qu-bd.com/stl/).

Of the SolidWorks models, everything is reverse-engineered from the stl files and within at least +-.5mm, though most dimensions are exact.

The heatsink and fan are just converted stls from the given files; they are NOT the ones sold by QU-BD. The stepper motor is made as close as possible to the physical motor, as I could not find any dimensions.

The STEP files are the same, although there is not a complete assembly.

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What carriage did you use?

I ended up making one out of wood; the extruder rested on top an 1/8" piece on the standard Mendel X-axis. The clearance was about 5mm. Now I use a metal L-bracket (instead of the standard mounting plate) affixed onto a vertical X-axis. If it helps, you should be able to omit the nuts in between the mounting plate and chassis block to gain a bit of vertical room.

Do you know if anyone has done a test print of the fan? I broke some blades and am looking for a functional parametric replica

Sorry; I do not. When I did the same, I just ordered some extra from QU-BD as they are cheap, then made a fan guard.