As the paper for the purpose of cleaning off work, known by this title, is of great use to the joiner, we will here give the process of manufacturing it, as it is seldom to be met with very good. Take any quantity of broken glass, that with a greenish hue is the best, and pound it fine in an iron mortar; have ready three sieves of different degrees of fineness; take several sheets of paper, free from knobs, fine cartridge is the best, and brush them evenly over with thinnish glue, then either hold them to the fire or lay them on a hot piece of wood, and sift the pounded glass freely over them through the finest sieve of pounded glass; let them remain till the glue is set, and shake the superfluous powder off, which will do again, and so you may proeeed with the other sieves for different degrees of fineness; hang them up to dry and harden, and you will have a superior kind of paper to that in general use, as the pounded glass is often mixed with sand, which greatly injures the quality of the paper, and produces scratches when used for cleaning off your work.