I have been using this contraption at work for the last 15 years and never gave it a second thought. Seems to me this would be helpful to fellow woodworkers who still cut sand paper the hard way.
Screw driver Slotted or Phillips (depends on type of screws you use)
Glue= Any wood glue
Some way to cut the wood to the finished sizes
Spring clamps or 3/4" nails (to attach the 3 pieces together)
1 pc 6 5/8" x 13" x 1/2" any wood (back)
1 pc 1 1/2" x 13" x 1/4" middle section
1 pc 1/2" x 13" x 1/4" top piece
one old hacksaw blade
2 ) small washers
2) 3/8" #7 pan-head screws
How to use:
Screw the cutter to a wall about eye level and insert sand paper as shown in the picture above (#11).
Place it evenly against the #1 stop then hold with one hand and tare the sand paper with the other and pull to you.
Rotate the paper 90° place against #2 stop and repeat step #2.
There you have it. Simple but effective. Works great for cutting sand paper for hand sanding as well. Less waste and always the same.
You may have to adjust your's a bit to fit your sander. This design works with both brands that I have.
Hope this is helpful to someone!