USB vacuum pump adapter (parametric)

Simple parametric replacement adapter for USB filament vacuum pump.
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updated May 9, 2023

Description

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My USB filament vacuum pump nozzle/adapter came with some small cracks that got larger after use, and now it has trouble sucking the air out all the way, since it can suck it through the cracks.

I quickly made this adapter and it works like a charm. This isn't a replacement nozzle, since there is no place for the silicone O-ring, but my pump uses a separate nozzle for the vacuum bags.

 

I printed it upside down (small hole touching the build plate, it's 2x as fast), with support set to angles above 55deg, at 0.2mm layer height using PM PETG.

I had to enable my cooling fan to avoid warping of the sides (my first print failed due to that), which worked great and I think it is probably possible to print it with no supports with cooling fan enabled at 100%.

 

The model is parametric, with a clearanceOffset of 0.5mm (you can change the offset depending on the accuracy of your printer).

 

Large hole inner diameter is 42mm.

Small hole diameter is 16.5mm.

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The author marked this model as their own original creation.

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