I am looking into making a vacuum hold down for my router now and have run across these motors.

https://www.ebay.com/itm/Vacuum-Moto...a40I:rk:2:pf:0

Its the same ones that I see recommended from here a lot, just cheaper.

https://www.centralvacuummotor.com/shopbot.htm

Just wanted to pass this along to anyone still on the fence. I played with using a shop vac and it gave me the fever to go for it with these motors.