How about a rubber bar in a lathe?
If there is a hole before drilling, and then a car axle with a front end of wire, plug in the positioning screw presses the car round, because the soft rubber car so that the car does not bend round hole, the above refers to cooked soft rubber, such as rubber is relatively hard point tool sharpening processing on the line!
Because this material is the most soft, with high-speed steel lathe tool grinding sharp point processing, open wide and shallow groove, bad lubricating bottom light chip, cut with white steel knife knife cutter head 0.2mm wide angle needle like
