The typical drilling process operates vertically, boring straight in, whereas manual milling runs horizontally across the surface for a smoothed custom finish.
Lower cost compared to CNC
Often it's beneficial to widen the topmost part of a hole so the installed hardware will be flush with the surface of the workpiece. This is known as countersinking.
Smooth surface, no hardware jutting out
Minimizes the sharpness of hole edges
Improves the lifetime of the hardware
Tapping is a drilling process where a thread cutter is used to cut ridges into the holes previously drilled. By adding this step, it improves the relationship between the workpiece and hardware.
Extends the lifetime of the material hole
Improves the grip of screws
Reduces the risk of damage
Cold saw cutting works on both ferrous and non-ferrous alloys, maintaining a cool temperature on the blade and workpiece where the swarfs absorb the heat.
Prevents the workpiece binding to the blade
Less burr production
Inhibits material expansion