# HM-3625: Morph a Symmetric Part to New Geometry

In this tutorial, you will update the mesh to a new geometry using symmetry.

This exercise uses the fe_only.hm and new_design.igs files, which can be found in the hm.zip file. Copy the file(s) from this directory to your working directory.

## Open the Model File

In this step you will open the model files, fe_only.hm and new_design.igs.

1. From the menu bar, select File > Open > Model and load the file, fe_only.hm.
2. From the menu bar select File > Import > Geometry and load the file, new_design.igs.

## Create Domains and Handles

In this step you will create domains and handles.

1. From the menu bar, select Morphing > Create > Domains.
2. Switch the domain type from global domains to 3D domains.
3. Toggle the element selector to all elements.
4. Activate the partition 2D domains option.
5. Click create to create the domains.

## Create Symmetries

In this step, you will create symmetries.

1. From the menu bar, select Morphing > Create > Symmetries to enter the Symmetry panel.
2. Switch the symmetry type to cyclical.
3. Switch the symmetry angle from 180 degrees to set freq.
4. Set the # of cycles to 18.
5. Click syst.
6. Select the center point of the gear.
7. Click domains >> all.
8. Click create.
9. Click return.

## Morph the Mesh to New Geometry

In the step, you will morph the mesh to the new geometry.

1. From the menu bar, select Morphing > Morph, then select the move handles subpanel.
2. Zoom in to one of the cogs of the gear as in the following image.
3. Switch the morphing method to move to point.
4. With from: handle active, select the node depicted in the following image.
5. With to: point active, select the point on the geometry that you want to move the handle to, as shown in the following image.
As the handles are moved, you will see that the mesh starts conforming to the new geometry.
6. In the same manner, move the handles as shown in the following image.