PMC-Colinet uses the custom-angle head on a Monarch VMC to produce keyways in the bore on oilfield pipe, typically 6 inches in diameter and 12 inches long. On one part, PMC documented a savings of 184 ...
Twist drills do not make accurately sized or good finish holes; a reamer of some type is often used to cut the final size and finish. A reamer will not make the original hole; it will only enlarge a ...