This one you use with “belts” for a belt sander. Nice idea overall.
https://www.homemadetools.net/forum/sanding-block-video-87373?homelistings#post188895
This one you use with “belts” for a belt sander. Nice idea overall.
https://www.homemadetools.net/forum/sanding-block-video-87373?homelistings#post188895