I recently learned of a smart sanding block design by "PB Machines" (https://www.homemadetools.net/forum/...ted-file-78988) that used a belt. I needed one! But could I change the design, so it was easier to build? There was a tradeoff between ease of construction and ease of changing belts. Here is the result.
If you are interested, please see
https://rick.sparber.org/SandingBlock.pdf
Your comments are welcome. All of us are smarter than any one of us.
Thanks,
Rick