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Dry machining steel with DIY CNC mill



Performance testing our machine building system. Hank is a medium sized CNC mill with self fabricated linear rails, and rack and pinion drive system. In this test we are dry machining 5mm low carbon steel in one pass. Trochoidal milling at 50mm/s, 10% stepover. Using a 3 flute 6mm bit at 30.000RPM. Router is a lowcost Makita RT0700C. Download and contribute here:

PS: always use trochoidal milling, and never use a vacuum cleaner to extract hot steel chips

Toolpaths done with Bark Beetle for Rhino

Macine controlled with Arduino Uno and GRBL

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