PartDesign SubtractivePrism

Menu location
PartDesign SubtractivePrism
Part Design → Subtractive Primitive → Subtractive Prism
Workbenches
PartDesign
Default shortcut
None
Introduced in version
0.17
See also
PartDesign CompPrimitiveSubtractive, PartDesign AdditivePrism

Description

Inserts a subtractive prism in the active Body. Its shape is subtracted from the existing solid.

On the left: active body (A) shown in grey and subtractive prism (B) shown in transparent red; result on the right.

There are several ways to invoke the tool:
- Press the Subtractive Prism button. Note: the Subtractive Prism is part of an icon menu labelled Subtractive Primitive. After launching FreeCAD, the Subtractive Box is the one displayed in the toolbar. To get the Prism, click on the down arrow besides the visible icon and select Subtractive Prism in the menu.
- Select the Part Design → Subtractive Primitive → Subtractive Prism option from the menu.
Set the Primitive Parameters and Attachment.
Click OK.
A Prism feature appears under the active Body.

It is possible to create skewed prisms by specifying angles in respect to the normal vector of the chosen attachment.

The Prism can be edited after its creation in two ways:

Double-clicking it in the Tree View, or by right-clicking and selecting Edit Primitive in the context menu; this brings up the Primitive Parameters.
Via the Property View.

DataAttachment: defines the attachment mode as well as the Attachment Offset. See Part EditAttachment.
DataLabel: label given to the Prism object. Change to suit your needs.
DataPolygon: number of sides in the polygon cross-section of the prism.
DataCircumradius: circumscribed radius of the polygon cross-section of the prism.
DataHeight: height of the prism.
DataFirst Angle: angle in first direction.
DataSecond Angle: angle in second direction.

Structure tools: Part, Group
Helper tools: Create body, Create sketch, Attach sketch, Edit sketch, Validate sketch, Check geometry, Create a shape binder, Create a sub-object(s) shape binder, Create a clone, Create a datum plane, Create a datum line, Create a datum point, Create a local coordinate system

Modeling tools:
- Additive tools: Pad, Revolution, Additive loft, Additive pipe, Additive helix, Additive box, Additive cylinder, Additive sphere, Additive cone, Additive ellipsoid, Additive torus, Additive prism, Additive wedge
- Subtractive tools: Pocket, Hole, Groove, Subtractive loft, Subtractive pipe, Subtractive helix, Subtractive box, Subtractive cylinder, Subtractive sphere, Subtractive cone, Subtractive ellipsoid, Subtractive torus, Subtractive prism, ‎Subtractive wedge
- Boolean: Boolean operation

Dress-up tools: Fillet, Chamfer, Draft, Thickness
Transformation tools: Mirrored, Linear Pattern, Polar Pattern, Create MultiTransform, Scaled

Extras: Sprocket, Involute gear, Shaft design wizard
Context menu: Set tip, Move object to other body, Move object after other object, Appearance, Color per face
Preferences: Preferences, Fine tuning

Getting started
Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate

Help: Tutorials, Video tutorials
Workbenches: Std Base, Assembly, BIM, CAM, Draft, FEM, Inspection, Material, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework