I needed a heavy duty grinder that would not slow down when grinding pieces for welding or cleaning rust and scale off. It has a heavy old 1/2 HP electric motor. I purchased the arbor assembly from my hardware store.
The base is a flywheel from an old buzz saw welded to a 3" pipe.
I made it 20 years ago and have not had any problem with it.
I have been meaning to build a cover over the belt. The belt is short and motor is close to the arbor.
The rpm is the same as a commercial grinder. There are no tool rests to catch your work on. I mainly use the wire wheel, the grinder gets used to smooth burrs off and to round edges. The belt is the only safety concern I would have.
But I do appreciate your concern.
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