There's nothing worse than struggling with those old school rubber sanding blocks with sharp pins you have to use to bend the paper - the rubber is always so hard you can't even get the paper in. Notch over pins. Then you should try to stretch the paper. Much luck! I've never managed to get a tight fitting piece of sandpaper in both. It's sooo easy. Just take the sanding disc you already have on hand that matches your random orbit sander and simply stick it to the underside. No more loose sandpaper.
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