Member postings for Andrew Johnston

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Thread: advice on purchasing a small mill

18/08/2010 09:22:34

Lucky those who have the time to take lots of small cuts! Generally I'd say buy the biggest mill you can afford, that will fit in the space available, and run from whatever mains supply is present. There is one proviso. If you're planning to machine small parts with small cutters, then the larger machines will probably not have high enough spindle speeds.

To put things into perspective a Bridgeport mill is very versatile and R8 tooling is widely available in all cost brackets, but it's not exactly a rigid machine. As a rough guide, in low carbon steel, one horsepower will remove 1 cubic inch of material per minute, which should give you an idea of whether a particular machine will manage the cuts you envisage.

Regards,

Andrew

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