555143 Shopsmith 12" Steel Sanding Disc

An Extra Disks that Lets You have one disk setup for sharpening and one for sanding

Heavy, 12" diameter steel sanding disc features a precision steel arbor that is carefully attached to eliminate bothersome run-out and wobble.

Just install the sandpaper disc of your choice, slip the arbor onto your Mark 7 or Mark V (or Power Station) spindle and go to work.

Keep an extra Shopsmith's flat steel sanding disc as seen below for when using your sharpening guide

Sharpening using the guide is not suited on a velcro backed system