10-27-2015, 01:25 PM
I like your numbers, but suspecting it isn't 1018. Slow down to 400 rpm and make sure the cutter is still sharp. Feed as slow as you can but still be making chips, not dust. It's easy to manually overfeed such a shallow DOC. .030-.050 deep might be more manageable while you're experimenting. Listen to it, feel the pressure.
There's a factor called "chip load". It runs about .002 per tooth, per revolution. A 4 flute cuts twice as fast as a 2 flute because you can feed the table twice as fast
(roughly speaking). RPM stays the same. You can calculate your feed into inches per minute (or seconds) and time yourself, just cutting air if you want.
Remember the first time you broke a tap or stripped a bolt? There's more to come.
There's a factor called "chip load". It runs about .002 per tooth, per revolution. A 4 flute cuts twice as fast as a 2 flute because you can feed the table twice as fast
(roughly speaking). RPM stays the same. You can calculate your feed into inches per minute (or seconds) and time yourself, just cutting air if you want.
Remember the first time you broke a tap or stripped a bolt? There's more to come.