micro boring head for mill - Practical Machinist
3. Likes (Received) 28. Grooving ~ Horn USA, Inc. - look at the supermini line. Best small boring series i've worked with. You'll need a straight shank adapter to fit into the boring head. This stuff is the best for small holes, we've done .02" stuff in the past with stock tooling!! 11-02-2013, 01:00 PM #9.