This is a 20,000rpm vacuum canister. You don't know how it works. The way it works is the fan blade sucks though the front door and pushes out of the back two holes. The build it, start printing the parts on my file, then get the motor and push it in the motor holder, then put it on and screw it tight. This suction is super powerful, be careful not to touch the blade or you will get cut, beware, this model is 2.00$, so have fun and see what your vacuum is.