3M Fine 9089NA Drywall Sanding Screen, 4 3/16in x 11 1/4 in, 2-Sheet Grit, 2 Count

I saw a video where someone used these to buff out hard water stains on their shower and toilet. I just moved into a house with hard water stains in both toilets. It worked on one toilet, but not the other. I guess it depends on how bad the stain is.

Used for a glass cutting project at school and did the job just as avertised. Very Pleased. I expected a cloth like material but it was almost like normal sandpaper. We cut a glass wine bottle for a school project, after using out glass cutter, this product it used to sand down the sharp glass edges remaining. I was able to convert the finished product into a drinking glass and can say this makes for a smooth and safe surface from all to use.

This and Barkeepers Friend worked perfectly to remove hard water deposit on toilet bowls, without damaging porcelain. So happy that 30 seconds of scrub removed deposits that neither bleach, nor vinegar would remove- the bowls look brand new! All you need in addition is a pair of gloves- I didn’t even shut the water off. So easy.

I used this to clean my toilet bowl. Now couple months passed, the bowl still looks like new. Great!

Very inaccurate book some recipes clearly have way more than designated number of calories many inaccuracies pour editing I would throw it away maybe an older version is better, but this one is lousy I would give it zero stars if I could

Worked fine for my garage mud seams. I used a thick nap roller to paint, which gives light texture. If I had sprayed I would also have gotten some fine grit sheets as well. If youre going to have texture this is all you need.

Easy to use.

These are very soft and are good for flat or rounded shapes but do not hold up well for trying to sand designs like relief carvings, its back to wrapping paper around wood scraps for those jobs.

I used the sponge this morning. I love the fact that it didnt warpwas easy to gripand got the job done.There is ample grit so that it can be reused several times.

I had my doubts about using this to clean my my toilets. I have very hard water and I have tried everything to keep toilet rings from forming and to remove them when they do including pumice stones. This worked like magic. I used a small strip of the sandpaper and Barkeepers powder and within 5 minutes my toilet looked like new. You can probably used any cleanser powder because it is the sandpaper that does most of the work. You can actually feel when the bowl is clean because the sandpaper will begin to just glide over the clean surface. And best of all you can get up under the rim and around the curves which are very difficult to clean with a pumice stone. Give it a try you won’t be sorry. The easiest and fastest way to get rid of those nasty hard water rings.