Donate

Box

Sphere

Part

Description

The Part Cylinder command creates a parametric cylinder solid. It is the result of extruding a circular arc along a straight path. In the coordinate system defined by its DataPlacement property, the bottom face of the cylinder lies on the XY-plane with its center at the origin.

A Part Cylinder can be turned into a segment of a cylinder by changing its DataAngle property.

Usage

1. There are several ways to invoke the command:
   • Press the Cylinder button.
   • Select the Part → Primitives → Cylinder option from the menu.
2. The Cylinder object is created.
3. Optionally change the dimensions and DataPlacement of the cylinder by doing one of the following:
   • Double-click the object in the Tree View:
     1. The Geometric Primitives task panel opens.
     2. Change one or more properties.
     3. The object is dynamically updated in the 3D View.
     4. Press the OK button to close the task panel.
   • Change the properties in the Property View.
   • Change the DataPlacement with the Std TransformManip command.

Example

A Part Cylinder object created with the scripting example below is shown here.

Notes

• A Part Cylinder can also be created with the Part Primitives command. With that command you can specify the dimensions and placement at creation time.

Properties

See also: Property View.

A Part Cylinder object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:

Data

Attachment

The object has the same attachment properties as a Part Part2DObject.

Cylinder

• DataRadius (Length): The radius of the circular arc that defines the cylinder. The default is 2mm.
• DataHeight (Length): The height of the cylinder. The default is 10mm.
• DataAngle (Angle): The angle of the circular arc that defines the cylinder. Valid range: 0° < value <= 360°. The default is 360°. If it is smaller than 360° the resulting solid will be a segment of a cylinder.

Prism

• DataFirst Angle (Angle): The angle between the extrusion direction of the cylinder and its positive Z-axis, measured around its Y-axis. The angle is positive towards its positive X-axis. Valid range: 0° <= value < 90°. The default is 0°.
• DataSecond Angle (Angle): The angle between the extrusion direction of the cylinder and its positive Z-axis, measured around its X-axis. The angle is positive towards its positive Y-axis. Valid range: 0° <= value < 90°. The default is 0°.

Scripting

See also: Autogenerated API documentation, Part scripting and FreeCAD Scripting Basics.

A Part Cylinder can be created with the addObject() method of the document:

cylinder = FreeCAD.ActiveDocument.addObject("Part::Cylinder", "myCylinder")

• Where "myCylinder" is the name for the object.
• The function returns the newly created object.

Example:

import FreeCAD as App

doc = App.activeDocument()

cylinder = doc.addObject("Part::Cylinder", "myCylinder")
cylinder.Radius = 10
cylinder.Height = 50
cylinder.Placement = App.Placement(App.Vector(5, 10, 15), App.Rotation(75, 60, 30))

doc.recompute()

Box

Sphere

Part