Mastercam Mill 3D Multisurface Pocket Roughing

Mastercam Mill 3D Multisurface Pocket Roughing is an older 3D toolpath suitable for rapidly removing material from complex areas. The method uses constant-Z planar movements to remove material layer by layer at defined depth levels. It does not include a separate finishing operation; instead, it is intended to serve as the primary roughing option before finishing operations. This toolpath remains a useful alternative when newer, more advanced toolpaths, such as OptiRough, are unavailable.

Features

• Constant-Z movements: Material is removed layer by layer using planar passes.
• Multisurface machining: Suitable for parts with multiple surfaces of different shapes and pocket-like features.
• Machining surface selection: The surfaces to be machined can be selected from solid faces, individual surfaces, or a surface mesh.
• Edge surfaces and containment boundaries: The user can limit the machining area or define edge surfaces beyond which machining will not proceed.
• Shortcut commands speed up selection:
  • Shift + click → tangent faces
  • Alt + click → vector-based selection
  • Ctrl + click → matching fillets or holes
  • Ctrl + Shift + click → matching faces
  • Double-click → select a feature
  • Ctrl + Shift + double-click → matching features
  • Triple-click → entire part

Applications

• Complex 3D pockets and recessed areas requiring extensive roughing.
• Situations where a part contains multiple separate surfaces that need to be machined in a single operation.
• Suitable for use when more modern dynamic or optimized roughing methods are unavailable.

Benefits

• Simple and easy-to-understand user interface.
• Enables rapid removal of even large amounts of material.
• Versatile surface and boundary selection options.
• Operates reliably in older software versions as well.

Tips

• Whenever possible, use boundaries and edge surfaces to keep the toolpath under control.
• Take advantage of shortcut commands to speed up surface selection on large parts.
• Check stock allowances and depth increments, as the toolpath does not include automatic remaining-stock detection.
• Use a separate finishing toolpath when high surface quality is required.

Summary

Mastercam Mill 3D Multisurface Pocket Roughing is a traditional roughing tool that works well for removing material from complex surfaces and pockets. It uses constant-Z planar milling, and its strengths are simplicity and versatile surface selection options. Although it is an older toolpath without finishing capabilities, it remains an effective solution when newer technologies cannot be used.