Rub silk is two rub that take whorl tooth look filar board makes workpiece expresses dough modeling to the gender is out of shape and become whorl. Silk of rub silk rub is two rub that take whorl tooth look filar board staggers 1/2 pitch is decorated relatively, static board fixed do not move, move board make parallel the move back and forth of Yu Jing board moves point-blank. Send when workpiece two board between when, move board ongoing rub approachs work, make its express dough modeling to the gender is out of shape and become whorl. CNC Milling