Simi Valley, California - Each of Scientific Cutting Tools' (SCT) coolant through port tools has coolant holes to either three or five of the tool's flutes because having an uneven number helps reduce chatter. Coolant lowers the surface temperature of the cutting zone making our port tools better equipped to deal with the extremely high temperatures that occur when machining a part. Lower temperatures in the cutting zone also make it less likely for chips to stick and throw off the geometry of the tool, making for a perfectly balance long lasting tool.
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Source: Scientific Cutting Tools Inc.