working mini roots blower

Its been a while but i have finaly got around to getting a working roots blower finished
this little guy is pretty good , and might be able to boost up to 5 hp but its untested in that application. I had a 6000kv 540 motor on it and thats too much rpm however it did make 3.5psi of boost and moved more air than any of my other air pumps/ supercharger.

materials :
m3x10mm : 6
m3x4mm :5
m4x10mm :2
6mm shaft( steal) approximately 70mm long pdf included.
2pc ( 4pc after an update) 626rs or zz bearings rs would be better likely.

I will be working on this in the future one planned update bearings throughout, as well as a larger volume at the same diameter.
https://youtu.be/JLxP3YsJAYk
https://youtube.com/shorts/Xv4Yxew-9zc?feature=share