... been grinding out, work on a new outcrop of the diamond, similar to the grinding of metallic materials. Matrix has ... a rinse. Most of the impregnated diamond bit is the use of synthetic diamond, known as synthetic diamond-impregnated drill bits. According to the different ... 40 degrees respectively, to adapt to different strata. Hot pressing diamond bit general dimensions: φ 75, 91, 110, 130, 150, 171, ...