Chamfer
At a glance
- Closed top-edge outer and hole contours—chamfer mill tools only
- Chamfer size sets horizontal flat width; tip clearance and tool angle set depth and XY offset
- Signed radial and axial stock plus optional finish pass to nominal chamfer geometry
Chamfer breaks the top edges of closed contours — outer profiles and holes both — with a chamfer mill. Assign it to a layer in the OPERATIONS list like any other operation; it requires a chamfer mill from the tool library and won't offer other cutter types.
How the cut is computed
You specify the chamfer by result, not by tool position: Chamfer Size is the horizontal flat width of the finished chamfer (default 0.03"). From that, the tool's chamfer angle, its end diameter, and Tip Clearance Below Chamfer (default 0.005") determine the XY offset toward the material and the Z depth. Tip clearance keeps the fragile tool tip cutting below the finished edge instead of riding exactly on it — the flat or point of the cutter runs slightly past the chamfer's bottom, so the visible edge is cut by the mid-flute where the geometry is true.
Stock and finish
Signed radial and axial Stock to Leave shifts the rough offset and Z target, and Take Finish Cut returns to the nominal chamfer geometry — the same pattern as Contour. Cut direction is selectable per operation, climb or conventional.
Tips
- Chamfer mills store an end diameter plus linked included/chamfer angles in the tool library; edit either angle and the other stays consistent (included = 2 × chamfer).
- The Heights tab has no Bottom card — depth comes from the chamfer geometry itself, measured off the Top height.