Surface preparation is of vital importance before polishing, burnishing and plating. Surface roughness may be improved by blasting with media, either abrasives or glass beads. Different surface finishes may be generated by varying the parameters of the micron size of abrasives and air pressure. The degree of matte to satin finish depends on the hardness of the material being finished. 5 lb. jars.
| GRADE | MICRON |
| Coarse | 180 |
| Medium | 100 |
| Fine | 80 |
