2026-02-12
Coolant selection when machining plastics
Most plastics can be machined dry. When you do need coolant, the wrong one causes more problems than the heat it was meant to remove.
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Cutting, turning, milling and drilling engineering plastics: tolerances, annealing, stress relief, coolants and how glass-filled grades behave on the shop floor.
2026-01-29
Machining 30 percent glass-filled grades without wrecking the tool
Glass-filled PPS, PEI and PA66 are abrasive enough to take the edge off carbide in minutes. The tool path, not the tool grade, is the biggest lever.
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2026-01-15
Cutting sheet square: how we hold tight squareness on a long panel
A panel can be dimensionally perfect and still be useless if the corners are not square. Here is the sequence that keeps them square.
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2025-12-18
Five things to know before machining virgin PTFE
PTFE is soft enough to mark with a fingernail and slippery enough to pull out of a chuck. It machines beautifully once you respect a few rules.
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2025-12-04
Designing PEEK bushings: the clearance numbers that matter
PEEK bushings fail for one reason more than any other — insufficient running clearance once the material reaches service temperature.
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