Title says it all. This is a stronger version of this design I made:

https://thangs.com/designer/motolupo2022/3d-model/Rotary%20Tool%20Table%20Mount-1153716

I designed this for when I'm working with items that generate a lot of friction, make more vibrations and require more torque and higher speeds. The cleated plate mounts facing up and digs into the underside of the surface - needless to say it was designed for wooden benchtops / tabletops. It is best to print with rigid filament like PLA+, CF-PLA etc. Dry your filament good and print at 50% triangular infill and it will be very strong.

Don't go nuts when tightening the knob - as soon as it snugs up it should be good enough. I used this for several hours while testing it, and it didn't budge a millimeter.

A permanent mount version can be found here: https://thangs.com/designer/motolupo2022/3d-model/Rotary%20Tool%20Permanent%20Table%20Mount%20-%20Bolt-in%20%26%20Screw-in%20Models-1239863

Dry your filament, eat your vegetables, don’t do drugs.