- The "MEDIUM FINE" grain corresponds to the 240 grain , it is mounted on an orange foam. - The "FINE" grain corresponds to the 400 grain , it is mounted on a yellow foam. - The "SUPER FINE" grit corresponds to the 600 grit, it is mounted on a green foam.
Use is dry. The higher the grain number, the finer the grain. The finer the grit (higher number) the less abrasive it will be.
These abrasive foam sponges have a good grip. They are firm and tender at the same time. Unlike sandpaper placed on a wooden block, the foam allows you to follow the relief of the part to be sanded, which avoids creating involuntary sharp edges and ensures very good sanding quality throughout its use. .
They are very practical for sanding the edges of the leather and thus removing all traces of cutting. They make it possible to remove the imperfections of the leather before applying a finishing edge or finishing gum. You will also use them between each coat because edge dyes tend to bring out the fibers of the leather. These sponges also make it possible to carry out the intermediate sharpening of the tools.