These are two sanding blocks I made just to try out some ideas for anchoring the sandpaper to the block. Both of them employ a wedge arrangement that secures both ends of the paper strip at once. A single screw secures the wedge to the block making paper changes quick and easy.
As a modest mathematics exercise both blocks are dimensioned such that a single strip cut from a standard sheet of sandpaper fits exactly without any trimming to length required.
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