6. Cavity on the reverse side

• Select Insert > Cavity.

  ► On the right in the toolbar, four buttons appear with the various insertion options.

• Select the third option: Enter coordinates based on snap point. Then move the cursor to the center point of the cut-out you just created and click as soon as the center point is snapped.

  ► The Cavity properties dialog opens.

• Specify the following values:

  1. Surface shape: Rectangle in rectangle

  2. Place on reverse side: Yes (check the box next to this option)

  3. Width: 24 mm

  4. Height: 14 mm

  5. Depth: 1 mm

  6. Corner radius: 1.5 mm

  7. Width of inner area: 16 mm

  8. Height of inner area: 6 mm

• Confirm with OK.

  ► The cavity is created.

Next step: