i've never used a 4th axis Rotary Head before but i am fully capable of 3d surfacing and programming up until this point. i could surface something like a "propellar" but don't know how to use "swarf" machining or a 4th axis head for indexing for even "2D Axial items"...is there somewhere i might be able to get a crash course on the "how to's" and what to "look for" when a program is posted