Copy the new .pst file into the Posts folder within your Mastercam installation directory.
Even with a properly downloaded and installed post, you may encounter issues. Here are some common problems and solutions:
Let’s walk through a safe, step-by-step process for downloading and installing a standard post. Mastercam Post Processors Download
Before running a part, simulate. Then, run the program in the machine with the tool 2 inches above the part (air-cutting). Check every M-code, every coordinate, and every tool change.
Furthermore, generic downloads often lack support for advanced cycles: Copy the new
Extract the contents to your (usually C:\Users\Public\Documents\shared Mastercam 202x\ ). Machine and control definitions go in the cnc_machines folder, while .pst and .psb files go in the specific machine type folder (e.g., mill\posts ). Requesting a Custom Post Processor YouTube·Cimquest Install Posts from the Tech Exchange - Mastercam 2021
For a single post file that needs updating, you can also use the C-Hook utility (accessible from within Mastercam). This tool will take a .PST file from an older version and attempt to convert it to the format required by the newer Mastercam version. Before running a part, simulate
: Specialist companies like ICAM and CAMplete Solutions offer advanced post-processing support for complex, multi-axis machines.
If you need a post processor for a standard 3-axis mill or 2-axis lathe, the official Mastercam download portal is excellent. If you run 5-axis, Swiss, or complex mill-turn machines, prepare for a headache—or a bill from your reseller.