RotaVac - A Rotary Vacuum Pump

thingiverse

RotaVac is an experimental "centrifugal compressor" that can be 3D printed in one piece and then spun in a drill or machine to create negative pressure gradients. The device fits standard 608 bearings, similar to those used in Makerbots, allowing a small nozzle (printed separately) to pass through the bearing's interior. This is a trial run, with more updates to follow after testing. To use RotaVac, print it with high infill for an airtight design; use an SD card for printing due to its curvy structure. Attach the bearing at the base and insert a nozzle through it. Spin the device counterclockwise on a drill to generate negative pressure and create a vacuum chamber. Carefully aspirate contents into the container, avoiding direct aspiration into RotaVac to prevent messes.