Coolant Delivery Has Come a Long Way
Coolant Delivery Has Come a Long Way Back in the 1980s, high-performance drills like indexables and spade drills started becoming popular. Instead of a twist drill running at single-digit RPMs, newer drills could run at 1,000 RPMs with huge penetration rates. The problem was, coolant was a must, and through-spindle coolant wasn’t even a thing …