To make your pressure-sensitive-adhesive (PSA) pads stick better, preheat the sander's pad with friction by running it against a nonmarring surface such as a scrap of carpet.

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To make your pressure-sensitive-adhesive (PSA) pads stick better, preheat the sander's pad with friction by running it against a nonmarring surface such as a scrap of carpet. You'll see that PSA pads won't stick to a cold pad but will adhere readily to a warm one.
—Johannes Michelsen, Manchester Center, Vt.