Hemp shives are the core of the stem, hemp hurds are broken parts of the core. In the EU, they are used for animal bedding (horses, for instance), or for horticultural mulch. Industrial hemp is much more profitable if both fibers and shives (or even seeds) can be used.
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How do you ensure that this is happening, and track your progress ? The MRR is a single number that enables you to do this. It is a direct indicator of how efficiently you are cutting, and how profitable you are. MRR is the volume of material removed per minute. The higher your cutting parameters, the higher the MRR. MRR in milling. D: Depth of cut, mm. W: Width of cut, mm. F: Feed rate, mm/min. MRR = (D x W x F / 1000) cc/min. MRR in Turning. D: Depth of cut, mm. F: Feed rate,mm/rev. S: Cutting speed, m/min. MRR = D x F x S cc/min