How to make a horizontal sander?

Any ideas on how to make a horizontal sander like the one in this picture? I would like to use it for sanding bottles that i have managed to cut and want to make a nice and smooth edge on them. Thank you

Picture of How to make a horizontal sander?

Its a big motor with a disc screwed on the front. You could make one from a treadmill motor and its power supply, or you could buy a fractional horsepower motor from somewhere like Harbor Freight

rickharris2 months ago

Check out You tube. That's what I did.