wow cappy that's a great collection. the high speed cutting bits work great for simple aluminum (case matching, exhaust work) grinding. so it's what i've been getting by with. but a nice set of carbide bits is on my future buy list before i tackle a couple of projects that are going to need lots of porting.
rick, can you explain the difference b/t the different carbide burrs (ferrious/non-ferrous) and why they work best for cast iron/aluminum?