[Cartierusm]

So I've just about finished the Bridgeport CNC conversion and I need some advice on some inexpensive, unless the expensive stuff is well worth it, indexable endmills?

I figure this is the route to go for CNC. I'll be using a heavy mist spray as far as coolant and I think I'll need 3/8", 1/2", 3/4" and 1" Indexable endmills for pretty much everything.

So center cutting? How can you tell if they center cut? I almost always ramp cut anyway so should I be concerned with this?

I'll be mainly cutting steel, stainless and aluminum I take it the holder will work for all and just need a different insert?

Shape, I figure round is for a rounded corner, but whats the cutting differencen between triangle, diamond and square?

And about all the offsets and rake angles and all that jazz.

I don't need a total explanation because I'm sure that's a course all it's own, but if someone can just give me a little direction. Thanks.