Italiano83
Aluminum
- Joined
- Mar 4, 2013
- Location
- Miami, FL
So...we typically deal with small aluminum mill-turn parts here of less than 1" diameter. However, we have a new program for parts that are about 2.5" in diameter and have thru holes anywhere from 1.5" to 2". Obviously we can use a fairly large drill 1" diameter or so, and bore out the rest with a large boring bar. But even still, for high production (1000+ pieces) I'm maxing my boring bar out at .100" DOC, so SEVERAL passes are required. What other tools can be used? Finish is not super important. Big twist drills are pricey and we'd have to get them with reduced shanks to fit in our collets. Any recommendations?