Ben--
I use the International Minicut on alot of the aluminum jobs we run. I use 1/2", 5/8" and 1" diameters. The ones with the polished flutes cost a bit more but is worth it. They evacuate the chips a bit better and don't load up. I'm not sure how much you can pull with your Sherline but these things will really hog out the material. For instance, I run the 1/2" cutter at 7640rpm and 85 inches per minute. Full width of cutter thru 3/4" aluminum and it just eats it up.
One cutter that I like better is the SGS Ski-Carb. They are a little more expensive but I have run them at 10,000 rpms at 200 inchs and it cuts like butter. Regrinds are no good unless you let SGS do it because of their special geometry. |