As we mentioned above, you can go to coarser grits where necessary or even smoother options when necessary. When dealing with severe scratches and other similar scenarios, it makes sense to go to as high as 7,000 grit sandpaper (source: Red Bluff Daily).

The rough edges around freshly cut glass have to be sanded down for the piece to be useful. Here are a few ways to get the job done: Using Sandpaper You can sand glass, but instead of standard sandpaper, you’ll need to use a diamond sand pad. The necessary grit type will vary from 80-3000 depending on the project. However, sanding glass is not always the best solution; you may wish to consider cutting the glass or finding a smaller piece. Map out the frosted shape you’re going for using a permanent marker. (You can erase any mistakes with some cotton swab dipped in some nail polish remover.) Keep in mind, if you can cut the glass down to size or replace it so you can start with a smaller piece, it’s best to explore those options first before sanding glass. For context, it can take hours to sand down tiny amounts of glass, whereas local hardware stores can cut glass in a few minutes. Can You Sandpaper Glass? Will It Cause Scratches? Regardless of the grit you choose, you need to keep the sandpaper wet at all times. Dry-sanding glass is very counterproductive. How To Sand Glass for a Frosting EffectA Dremel is a rotary tool useful for sanding, cutting, and polishing glass and metal. It can perform at high speeds, typically hitting 10,000-5,000 RPMs. You can use it to get excellent results when sanding or polishing scratches out of glass, but you have to know how to handle it. Trizact Performance Sandpaper combines a fast cut and extremely consistent, refined finish for your auto body projects. It features our Trizact structured abrasive - its microscopic three-dimensional mineral structures resemble pyramids. This patterned, precise surface on a lightweight foam removes very fine sand scratches and leaves metal and painted metal surfaces ready for polishing. Grab the piece of glass you’re working on and place the edge directly over the spot with silicon carbide and water mix.

Attach a sanding bit to the rotatory power tool. Be sure to use a bit that hasn’t been used to get the best results in the past.You don't have permission to access "http://www.homedepot.com/b/Paint-Paint-Supplies-Sanding-Supplies-Sandpaper/Sand-Paper/N-5yc1vZbobkZ1z0t8q0" on this server. Fine; used to roughen surfaces for painting or as a first passthrough for later sanding with ultra-fine grits. Very pleased with this paper,it retains its form well and the grit seems to keep sharp without clogging.

Move to a finer grit and repeat the process until the edge is smooth enough. The grit progression after using a coarse 80-grit is 150-grit, 320-grit, and 400-grit. Sand the area you’ve outlined with the marker, using short strokes. Avoid leaving any spots untouched. Remove all the clear areas within the section you’ve outlined, and don’t use the tool on the masked parts. The tape will only offer some protection, but it won’t hold up well against persistent bumps. It's often thought that the grit number refers to the number of grit particles per square inch. Not so. Rather, the number scale refers to the number of holes per square inch in the screens that are used when sieving the abrasive grains during the sandpaper's manufacture. For example, in 60-grit sandpaper, the abrasive particles used in the paper were sieved through a screen that had 60 holes per square inch. How Sandpaper Grit Works

Pour some water and coarse grit of silicon carbide powder onto the glass. Stir the mix together with a finger. Work from one end to the other. Don’t leave the tool running on the surface, as is the case when using a power sander.

Some people keep the surface and sanding pad wet by working under running water (source: Glass Etching Secrets).

Sandpaper numbers are the size of the abrasive particles on that particular sandpaper. The lower the number, the coarser the abrasives. The higher the number, the finer the size of the abrasives. After you’ve completed the initial sanding, turn off the Dremel and swap out the sanding bit for a finer grit option. Use this to go over the surface again for a smooth and polished appearance. How To Sand Glass by Hand Set the tool to a medium speed level. The exact level that qualifies as medium will vary from one model to another. Cover up areas you don’t want the frosted effect on with a coat of painter’s or masking tape. Use small tape pieces cut into the right shape when covering up tight corners and curved edges.