I'm interested in trying to make one of these:
The construction and machining seem pretty simple. But what kind of bearings or seals can be used between the body and the shaft that will handle, say, 20-50psi without without leaking? The shaft needs to rotate somewhere in the range of 3,000 to 15,000 RPM.
Does anybody have any clues about this? Am I better off to spend the 140 bucks and just buy the thing?
Thanks,
Jim