Make actuator body

Note: Your document units should be in the MMGS system! If they aren't, change your settings by going to Options, selecting the Document Properties tab, and clicking on Units in the side menu.

Draw base shape

[Video: Make actuator body]

In the top plane, draw a 12.7mm diameter circle, centered at the origin.

Draw a line across the diameter of the circle.

Use the Trim tool to remove half of the circle’s perimeter, leaving a semicircle.

We manually offset the bottom by drawing 3 lines to connect the arc endpoints, keeping everything at right angles.

Offset for actuator wall thickness

Now give the actuator 2mm wall thickness.

First, use Offset Entities to offset the sketch arc by 2mm. Make sure the “Select chain” option is unchecked so that the flat bottom is not offset.

We manually offset the bottom by drawing 3 lines to connect the arc endpoints, keeping everything at right angles.

Use Smart Dimension to make the bottom 2mm thick as well.

Use Smart Dimension to make the bottom 2mm thick as well.

Extrude

Exit the sketch, and Extrude the shape 170 mm.

Fillet

[Video: Fillet edges]

Add a 1.1 mm radius Fillet on the two long edges of the actuator’s flat face.