Reply by Lazyman

I didn’t notice that the minimum speed was 600rpm. That definitely high for forstner bits over about 1 3/8” especially for hardwood. A 1-1/2” to 2” bit in maple should probably be closer to 250 so you might be forced to use a hole saw for larger holes.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.