3M 216U Gold sandpaper features gold resinite Fre-Cut aluminum oxide abrasive material. These sheets are intended for Dry sanding only. Standard 9" x 11" Sheets, sold in sleeves. 3M 216U Gold Sandpaper lasts a long time and is one of the best for dry sanding. Leaves no residue. Great for sanding water based finishes. Resin-coated aluminum oxide paper. Used for sanding bare wood, coating removal, and between-coat sanding. This sandpaper is known for its fast cut rate, flexibility, and consistent results.
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I'm trying to use this paper (320) on gel coat to sand out scratches and smooth the hull. I'm using a 1/4 sheet sander. It cuts well for about 1 1/2 square feet, then it stops being effective. Tries it by hand on a sanding block and it loaded up instantly. Any tips?
You should be using wet sandpaper on gel coat, this is good stuff for wood or light sanding between coats of finish.
I have used the 3M Gold sandpaper for preparing bare mahogany and teak, as well as between varnish coats with excellent results. I have noticed some loading on varnish but it can be brushed or lightly scraped off. I have not tried it on gelcoat so cannot comment; however, the gelcoat may be loading the paper more than the varnish. Based on my experiences with automotive epoxy primers, a good grade of wet-or-dry paper used wet has been the most effective. That may be a better material for gelcoat as well than the dry product.Jeff H
Consider another product for wood
Jamestown does show this product suitable for sanding wood. I found the sandpaper does leave a gold residue embedded in the wood. 3M does not list this product for use on wood. It appears to be better suited for sanding paint, fillers, and fiberglass. I have only used it on plywood.
I will be buying this product again and again"
The cost of sandpaper has risen dramatically over the years, this product has maintained quality and provided a great value.
Harper Woods, MI
This is a superb product. I use it to sand out all kinds of finishes. It cuts great and does not load up. If there is any powder on the surface, all you have to do is buff it once across a rag and it's clear. One sheet has tremendous mileage.