FreeCAD Memo

How to cut a solid with a plane

10/12/2015
Version 0.15
In this section, I will explain how to cut a 3D shape with a plane. With this function, You can cut any 3D shape with a plane.
Arch_CutPlane-after Arch_CutPlane-after
  1. Create or import a shape to be cut with a plane.
    Arch_CutPlane-before
  2. Switch workbench to Draft workbenchDraft workbench to use a tool for cutting.
  3. Draw rectangleDraft_Rectangle. The rectangle is created as passing through the origin and the normal vector must be parallel to the line of sight.
    Arch_CutPlane-Rectangle
  4. Convert rectangle to a plane by UpgradeDraft_Rectangle.
    Arch_CutPlane-Upgrade
    Arch_CutPlane-face
  5. If you want to adjust a position or direction of the plane, It is poosible to edit them with [Placement]-[Angle] or [Placement]-[Position] in data property of the plane.
    Arch_CutPlane_face_data
  6. Switch workbench to Arch workbenchArch workbench to cut the shape.
  7. Double click a solid on 3D view to select it.
    Arch_CutPlane-select1
  8. Then click the cut plane with Ctrl key to select it.
    Arch_CutPlane-select2
  9. Select Cut-PlaneArch_CutPlane. Then, a preview of the area to be erased (red translucent cuboid) will be displayed.
    Arch_CutPlane-front
  10. With a combobox on task tab, select which side of the plane will be erased with a combobox on task tab and click OK to cut the shape. If you nolonger need the cut plane, you can delete it.
    Arch_CutPlane-result
    Arch_CutPlane-after
References:
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