Originally Posted by Harryman  You can run them at crazy fast feeds without a problem, depending on materials, cutters etc. I'll normally run mine at 1500 -2200 mm/min with .005" conical cutters in wax. 1/8" end mills, I've had them up to 3000mm/min which is pretty hilarious actually. Takes about 5 seconds to mill a square inch.
Like everyone above mentioned, not designed for big cutters and deep cuts, but they're great for small precision work. |
They are impressively capable little mills for their size. I actually have the "big brother" to this machine (minimill 4) with some mods. Even when it had the Sherline spindle and a 1/2 HP motor, I could cut 6061 Aluminum at 60+ IPM with a .25" bit at .05" DOC(I can double this now with the same machine and different spindle). 400ipm rapids are no trouble with a stepper system, either. Like Fixittt said - they are smooth, efficient little machines - tough to find better in this size IMO.