GuiCommand: Name: PartDesign MultiTransform MenuLocation: Part Design , Apply a pattern , Create MultiTransform Workbenches: PartDesign_Workbench SeeAlso: PartDesign_Mirrored, PartDesign_LinearPattern, PartDesign_PolarPattern, PartDesign_Scaled

PartDesign MultiTransform

Description

The PartDesign MultiTransform tool creates a pattern of one or more features. The pattern can include multiple transformations where each subsequent transformation is applied to the result of the previous transformation.

The available transformations are: Mirrored, LinearPattern, PolarPattern and Scaled. The first three are also available as separate tools.

Usage

Create

1. Optionally activate the correct Body.
2. Optionally select one or more features in the Tree view or the 3D view.
3. There are several ways to invoke the tool:
   • Press the Create MultiTransform button.
   • Select the Part Design → Apply a pattern → Create MultiTransform option from the menu.
4. If there is no active Body, and there are two or more Bodies in the document, the Active Body Required dialog will open and prompt you to activate one. If there is a single Body it will be activated automatically.
5. If no features were selected the Select feature task panel opens: select one or more (hold down the Ctrl key) from the list and press the OK button.
6. The MultiTransform parameters task panel opens. See Options for more information.
7. Press the OK button at the top to finish.

Edit

1. Do one of the following:
   • Double-click the MultiTransform object in the Tree view.
   • Right-click the MultiTransform object in the Tree view and select Edit MultiTransform from the context menu.
2. The MultiTransform parameters task panel opens. See Options for more information.
3. Press the OK button at the top to finish.

Combine existing transformations

It is possible to create a MultiTransform object from existing Mirrored, LinearPattern and PolarPattern transformations.

1. Check the Originals property of the existing transformations to make sure they have been applied to the same features.
2. Select those features in the Tree view.
3. There are several ways to invoke the tool:
   • Press the Create MultiTransform button.
   • Select the Part Design → Apply a pattern → Create MultiTransform option from the menu.
4. The MultiTransform parameters task panel opens.
5. Press the OK button at the top.
6. Edit the Tranformations property of the created MultiTransform object:
   1. Click in the field.
   2. Press the ... button that appears.
   3. The Link dialog opens.
   4. Hold down the Ctrl key and select the existing transformations.
   5. Press the OK button.
7. Optionally edit the MultiTransform object, see above.

Options

• Choose the mode:

  **Transform body**
  
  : Transforms the whole base feature\'s shape (default). <small>(v1.0)</small> 

  • Transform tool shapes

    : Transforms the individual tool shapes of selected features.

    • To add features:
      1. Press the Add feature button.
      2. Select a feature in the Tree view or the 3D view.
      3. Repeat to add more features.
    • To remove features:
      1. Press the Remove feature button.
      2. Do one of the following:
         • Select a feature in the Tree view or the 3D view.
         • Select a feature in the list at the top and press the Del key.
         • Right-click a feature in the list at the top and select Remove from the context menu.
      3. Repeat to remove more features.
    • If there are several features in the pattern, their order can be important. See PartDesign PolarPattern.

• To add transformations:

  1. If there are existing transformations: select the transformation after which the new transformation should be added.

  2. Right-click the Transformations list.

  3. Select one the following options from the context menu:

     **Add mirrored transformation**
     
     . See [PartDesign Mirrored](wiki-test2.php?gitpage=PartDesign_Mirrored).

     • Add linear pattern

       . See PartDesign LinearPattern.

     • Add polar pattern

       See PartDesign PolarPattern.

     • Add scaled transformation

       . See PartDesign Scaled.

  4. The selected transformation is added to the list and the settings for the transformation are displayed below the list.

  5. Adjust the settings to suit.

  6. Press the OK bar at the bottom.

  7. Repeat to add more transformations.

• To edit a transformation:

  1. Right-click the transformation in the Transformations list.
  2. Select Edit from the context menu.
  3. Adjust the settings to suit.
  4. Press the OK bar at the bottom.

• To change the order of the transformations:

  1. Right-click a transformation in the Transformations list.
  2. Select Move up or Move down from the context menu.

• If the Update view checkbox is checked the view will update in real time.

Limitations

See PartDesign PolarPattern.

Example

You can use this tool to create a fully parametric part that is symmetrical about two axes from a sketch.

This could be a 150x100x10mm large mounting plate for a motor with symmetric holes.

1. Create a Body and add a sketch on one of its base planes.
2. In the sketch create geometry for one quadrant of the part (i.e. the upper right quadrant).
   • Note that the constraints must also only cover a quarter of the part, e.g. instead of the full dimension of {{Value|150mm}} enter {{Value|150/2mm}} or {{Value|75mm}}.
   • Make sure the sketch is closed by adding lines along the vertical and horizontal axes.
3. Extrude the part with PartDesign Pad.
4. Select PartDesign MultiTransform.
5. The task dialog opens.
6. The last feature of the Body is already selected. Since we want to mirror that feature we can ignore the Add feature and Remove feature buttons.
7. Right-click in the Transformations field and select Add mirrored transformation from the context menu.
8. For the Plane select Vertical sketch axis.
9. If the Update view checkbox is checked, you should now see the part mirrored about one axis.
10. Again select Add mirrored transformation from the context menu of the Transformations field.
11. Now for the Plane select Horizontal sketch axis.
12. Press the OK button to finish.
13. To remove the edges along the axes of symmetry in the final result, set the Refine property of the new feature to {{Value|true}} in the Property editor.

To verify that the part is fully parametric open the initial sketch with the quarter part and change one dimension, say a hole diameter. After closing the sketch the three other holes will have changed accordingly. This works with all other dimensions as well. A sketch modelling the full part with a single extrusion and no mirroring would be a lot more complex and all later changes would be more complicated.

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This page is retrieved from https://github.com/FreeCAD/FreeCAD-documentation/blob/main/wiki/PartDesign_MultiTransform.md