Rotary vane pump (video in discription)
thingiverse
This printable rotary vane pump is functioning as intended! https://drive.google.com/file/d/19ktNKS7G6-PaFi0L-ZlNlzfp5NhS05jZ/view?usp=sharing Although it may require some lubrication and a bit of sanding to get it spinning smoothly while closed, the model I designed still managed to deliver impressive results despite its less efficient v1 design with inadequate air intake. You won't need any supports during printing, and the tread will function perfectly.
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