Achieving a high-quality surface finish on a custom machined piece is often challenging, but the maker showcased a highly satisfying finishing pass on aluminum. This multi-axis CNC milling project involved using an aluminum block secured within a machine chuck to create a unique component. The final part incorporates several specialized geometries, including a semi-cylindrical groove, an elongated central recess, and a machined serrated gripping section.
The construction details are impressive, featuring multiple countersunk mounting holes alongside additional drilled holes located on the underside and rear interface of the piece. The process involves a rotating end mill removing material, which allows the cutting tool to trace along the stepped surfaces while the end mill simultaneously smooths the contours. During the operation, liquid and mist were visible on the machine’s safety window.
The maker mentioned that a quality fly cutter delivers a mirror finish that is difficult to surpass. It is noticeable that the maker turns the component over to allow viewing of the underside and rear interface. This level of detail suggests careful planning for the final product’s functionality.
One point remains open regarding the tool used. It is not clear from the provided information whether the finishing tool was an end mill or a fly cutter.