GuiCommand: Name: SheetMetal AddJunction MenuLocation: SheetMetal , Make Junction Workbenches: SheetMetal_Workbench Shortcut: S J SeeAlso: SheetMetal_AddRelief, SheetMetal_AddBend
SheetMetal AddJunction
Description
The SheetMetal AddJunction command creates open junctions between two sections (walls/flanges) of a sheet metal object. Without these junctions sheet metal sections connected to the same base will not be unfoldable.
This command is the second of three steps to convert a shell object made with the Part Workbench or PartDesign Workbench into an unfoldable sheet metal object:
![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/SheetMetal_ConvertShellObject-01.png)
![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/SheetMetal_ConvertShellObject-02.png)
![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/SheetMetal_ConvertShellObject-03.png)
![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/SheetMetal_ConvertShellObject-04.png)
Usage
- Select one or more edges.
- There are several ways to invoke the command:
- Press the
Make Junction button.
- Select the SheetMetal →
Make Junction option from the menu.
- Right-click in the Tree view or the 3D view and select the SheetMetal →
Make Junction option from the context menu.
- Use the keyboard shortcut: S then J.
- Press the
- The Add Junction Parameter Task panel opens (introduced in version 0.5.00).
- Optionally press the Select button to add more faces.
- Press the Preview button to finish the selection and display the changes.
- Optionally adjust the parameters in the Task panel.
- Press the OK button to finish the command and close the Task panel.
- A Junction object will be created consisting of one opening at each selected edge.
- Optionally adjust the parameters in the Property editor.
![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/SheetMetal_ConvertShellObject-06.png)
![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/SheetMetal_ConvertShellObject-07.png)
Notes
-
The commands
SheetMetal AddRelief,
SheetMetal AddJunction, and
SheetMetal AddBend work best with hollow cuboids i.e. shell objects with a constant thickness and only 90° angles between faces.
-
See SheetMetal AddRelief for hints about creating shell objects of cuboids.
-
Junction in this case is not the result of this tool, which is a gap between adjacent planar faces, but rather describes the location where two planar faces of the finished real world object meet, to be welded, for example.
Properties
See also: Property editor.
A SheetMetal Junction object is derived from a Part Feature object or, if it is inside a PartDesign Body, from a PartDesign Feature object, and inherits all its properties. It also has the following additional properties:
Data
{{Properties_Title|Parameters}}
-
base Object|LinkSub: \"Base Object\". Links to the edges defining gap/junction positions.
-
gap|Length: \"Junction Gap\". Default: {{value|2,00 mm}}.Size of gap/junction to be added.
⏵ documentation index > SheetMetal > Addons > External Command Reference > SheetMetal AddJunction
This page is retrieved from https://github.com/FreeCAD/FreeCAD-documentation/blob/main/wiki/SheetMetal_AddJunction.md