Hi, I need to drill a series of 18mm holes through the side of 65nb heavy black pipe. In the past I have done small batches using an ordinary hss bit but my customer has just placed an order for 400 pieces, with 5 or 6 holes per piece.
My machine is an Hitachi VMC but does not have a 4th axis so I drill through both sides in one setup...any ideas on a better drill to speed up the process? Thanks