Polyvinyl chloride plastics can be processed using almost all tools that are also used in the processing of wood and metal. For the CNC milling of PVC, however, we recommend that when looking for the right milling tool, it is important to ensure that it is ground in a way that is suitable for plastics and can absorb a corresponding volume of chips. When machining polyvinyl chloride, our milling cutters usually work at moderate cutting speeds, high feed rates and a relatively high cutting depth. If the heat during CNC milling is dissipated via the chip and the cutting edges of the milling cutters have a certain degree of sharpness, additional cooling of the milling cutters is not absolutely necessary. In most cases, cooling of the milling cutters is only necessary when a particularly high cutting depth is used and there is a risk of the material smearing. We recommend the use of either compressed air or water for appropriate cooling.
In addition, it is important to ensure that neither prominent scoring nor sharp cross section transitions occur in any of the processes used to process plastic. In such a case, if the plastics were subjected to stress, the notch effect would most probably result in material breakage. By using orbital sanders and polishing pastes, we can subsequently produce smooth surfaces on the edges of the material. In addition, we adjust the edges created by the milling cutter, additionally with flat scrapers.
In addition to CNC milling, 3D milling of polyvinyl chloride is also possible. Apart from the appropriate computer software, the hardware for 3D milling is also equipped with a special ball end milling cutter.