Before making a plunge cut, many machinists prep their workpiece through a practice called “spotting” to ensure that the finished hole winds up precisely where it’s supposed to. Spotting also helps improve the quality of the finished workpiece. But what are spot drills used for and what are the best […]

When you need to drive deep holes into your piece, there are certain rules you need to follow if you want it to stay true to print. Many elements must be considered in hole-making applications: material, presetting, coolant, chip load, and tool material are among the many factors that will […]