Oscillating Spindle Sander Uses A Drill Press
Oscillating spindle sander uses a drill press is article about Woodworking Jigs bookmarked by miguel with ID 1695401796 was uploaded on 06-01-2019 and has been viewed 285,021 times.
The oscillating spindle-sander attachment for a drill press described in Fine Woodworking #109 appears to be a good substitute for a benchtop sander.I built a similar, less expensive version that I've been using for more than 20 years.
The attachment uses a gear motor to drive a harmonic-motion cam (a circular disc rotating off center), which raises and lowers the quill by means of a follower arm.I made the cam from 1/2-in.-thick Garolite, a dense thermoset plastic, which looks like tempered Masonite.
Aluminum or even hardwood could be substituted.The follower is a steel rod that fits in the feed-yoke hole in the drill press.It is fitted with a roller bearing that rides the cam.Sandwich the bearing between thin brass washers, and hold it in place with a slotted-head machine screw.
Fasten a weight to the rod (I used a cast-iron pulley) to counteract the spindle-return…...