flat grinder - tripods
Fine Black Polishing
For perfect black polishing of steel or brass on screw heads, bridges, cover plates, regulators, chatons, gear levers, etc. Only by means of a time-consuming finishing process and a special hand polishing technique can certain parts be polished to such a high gloss that they appear black to the observer in a certain angle and incidence of light. The components are slowly polished in circles or lengthwise on a tin plate with a little diamond polishing paste.