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- Nov 24, 2013
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He's using 3/8 though not 5/8
100 SFM on a 5/8" diameter tool is 612 RPM.
100 SFM on a 5/8" diameter tool is 612 RPM.
Coolant makes a huge difference.
Try the brown sulphurized cutting oil applied with an acid brush or a cool-mist #77 solution applied with a spray bottle.
Matt
I agree Bill, the speeds and feeds in the books are intended for heavy industrial machines, not hobby machines 10,000 pounds and 15 hp, not 100 pounds and a half hp! To quote Clint, "A man's gotta know his limitations"
I'm still saving pennies (and looking for space) to buy a mill (industrial size) so I'm limited to milling ;n my lathe:4500 pounds, 3hp, but still reduced cutting loads, it's not the job it's built for....
I agree your point about far-eastern flexy machines, I worked for a while at an importer and they were crap, I still don't understand buying one for more than an older, industrial mill or lathe!