Technical Selection
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Best countersink for aluminum? Why does it weld?
Aluminum is soft and sticky; recommended: single or double flute polished countersinks, uncoated or DLC-coated to reduce built-up edge. Parameters: speed S=1500-3000rpm, feed F=100-200mm/min, use kerosene or dedicated aluminum coolant. Lihao Technology's non-ferrous series delivers excellent surface finish.
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