These sandpapers seemed like a good choice until I started using them. I have a RIGID random orbit sander with a 5" velcro strap (Velcro) which is about 3 years old and has been used on many projects including post processing large decks. This time my project was a built in cutting board about 50" wide x 32" deep in the kitchen. After After a few quick passes (4) I inspected the pads and found that they were mostly clogged with sawdust! My random orbit sander has 8 holes to suck the sawdust into the filter and it successfully sucked the sawdust in. Applying enough pressure onto my grinder to stabilize the grinder I did not apply excessive pressure as this tends to cause the grinding pads to clog faster The adhesion (velcro) of the pads was so-so I would recommend these don't buy again.
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