Part Chamfer

Other languages:
Fillet
MakeFace
Part

Part Chamfer

Menu location
Part → Chamfer...
Workbenches
Part
Default shortcut
None
Introduced in version
-
See also
Part Fillet

Description

Part Chamfer chamfers the selected edge(s) of an object. A dialog allows you to choose which edge(s) to work on as well as modify various chamfer parameters.

Plate with chamfered corners

Usage

  1. Optionally select one or more edges in the 3D view.
  2. There are several ways to invoke the command:
    • Press the Chamfer... button.
    • Select the Part → Chamfer... option from the menu.
  3. The Chamfer Edges task panel opens.
    • Optionally (re-) select an item in the Selected shape list in the Shape section or in the 3D view.
    • Edit the chamfer parameters.
  4. Press OK to close the task panel and apply the chamfer.

Options

Dialog-chamfer

Properties

Base

Limitations

Chamfer might do nothing if the result would touch or cross the next adjacent edge. So if you do not get the expected result, try with a smaller value. This is the same for Part Fillet.

Also note that the Chamfer feature is affected by the Topological naming problem when the any change is done to a modeling step earlier in the chain that affects the number of facets or vertices. This could cause unpredictable result. Until that is resolved it is advised to apply Chamfer and Part Fillet operations at the last steps in the chain.

Scripting

The Chamfer tool can by used in macros and from the Python console by adding a Chamfer object to the document.

Example Script: 

import Part
cube = FreeCAD.ActiveDocument.addObject("Part::Feature", "myCube")
cube.Shape = Part.makeBox(5, 5, 5)
chmfr = FreeCAD.ActiveDocument.addObject("Part::Chamfer", "myChamfer")
chmfr.Base = FreeCAD.ActiveDocument.myCube
myEdges = []
myEdges.append((1, 1.5, 1.25)) # (edge number, chamfer start length, chamfer end length)
myEdges.append((2, 1.5, 1.25))
myEdges.append((3, 1.5, 1.25))
myEdges.append((4, 1.5, 1.25))
myEdges.append((5, 1.5, 1.25))
myEdges.append((6, 1.5, 1.25))
myEdges.append((7, 1.5, 1.25))
myEdges.append((8, 1.5, 1.25))
myEdges.append((9, 1.5, 1.25))
myEdges.append((10, 1.5, 1.25))
myEdges.append((11, 1.5, 1.25))
myEdges.append((12, 1.5, 1.25))
chmfr.Edges = myEdges
FreeCADGui.ActiveDocument.myCube.Visibility = False
FreeCAD.ActiveDocument.recompute()

Example Script Explanation: 

import Part
cube = FreeCAD.ActiveDocument.addObject("Part::Feature", "myCube")
cube.Shape = Part.makeBox(5, 5, 5)

chmfr = FreeCAD.ActiveDocument.addObject("Part::Chamfer", "myChamfer")

chmfr.Base = FreeCAD.ActiveDocument.myCube

myEdges = []
myEdges.append((1, 1.5, 1.25)) # (edge number, chamfer start length, chamfer end length)
myEdges.append((2, 1.5, 1.25))
myEdges.append((3, 1.5, 1.25))
myEdges.append((4, 1.5, 1.25))
myEdges.append((5, 1.5, 1.25))
myEdges.append((6, 1.5, 1.25))
myEdges.append((7, 1.5, 1.25))
myEdges.append((8, 1.5, 1.25))
myEdges.append((9, 1.5, 1.25))
myEdges.append((10, 1.5, 1.25))
myEdges.append((11, 1.5, 1.25))
myEdges.append((12, 1.5, 1.25))

chmfr.Edges = myEdges

FreeCADGui.ActiveDocument.myCube.Visibility = False

FreeCAD.ActiveDocument.recompute()


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