Cutting Metal

What is the best feed rate and plunge rate to cut mild steel?

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These machines run way too fast to cut steel.
All you will do is burn up cutters.

Don’t tell ShaneBell that!
Using carbide burr test cut

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That is HIGHLY dependant on the rigidity of your particular setup. Low RPM, shallow DoC, cooling/flow and patience is the key. Get end mills intended for hard metals and follow the chip load suggested for that particular end mill.

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