• Creating a New Part
• Creating a Part Studio
• Creating a Sketch
• Creating an Extrude
• Creating a Sketch on the Face of an Extrude
• Creating Multiple Extrudes from one Sketch
• Adding Mount Holes
• Adding Embedded Nut Insets
• Adding Spacers for Clearance
• Secondary Clearance
• Fillet Supports

Final CAD for reference:

Now it is time to check tolerances and model our mount in an Assembly!

• Creating an Assembly

Rest is in progress