Create the 2U Corner

Learn how to create the 2U corner piece for the mini-rack

In this lesson we’ll create the 2U corner piece for the mini-rack.

What is a U?

In rack units, 1U equals 1.75 inches (44.45 mm). The standard rack unit is a 19-inch (482.6 mm) wide horizontal space. This is the standard width of rack-mountable equipment. The height of a rack is measured in U. A U is 1.75 inches. A 1U rack is 1.75 inches tall, a 2U rack is 3.5 inches tall, and so on.

Common Rack Dimensions

There are a number of key dimenions that are common to this design (and racks in general):

• 6M Holes: 6mm
• Pitch between 1U holes - 15.875mm
• 1U Height - 44.5mm (you can use the 44.45mm here instead)
• pitch between U’s - 12.75mm

2U Corner

1. Create a new file named 2u_corner in Fusion 360

2. Create a new sketch on the XY plane, named 2u_base

3. Create the following sketch:

   

4. Extrude the body profile by 4mm:

   

5. Extrude the top tab profile by 2mm:

   

6. Extrude-cut the bottom tab profile by 2mm:

   

7. Create a new sketch on the top of the new part, named top_profile

8. Create the following sketch:

   

9. Extrude the top profile to the bottom surface of the main part:

   

10. Create a new sketch on the top of the body, named Ribs

11. Create the following sketch:

    

12. Create the following sketch on the left side of the main part:

    

13. Extrude-cut the last sketch:

    

14. Create the following sketch on the left side of the main part, for the top and bottom tabs:

    

15. Extrude-cut the last sketch:

    

16. Extrude-cut the last sketch:

    

17. Create cons construction plans for each rib:

18. Create a new consuction plane 14mm from the top:

    

19. Create a new consuction plane 15.875mm from the last construction plane:

    

20. Create a new consuction plane 14.5mm from the last construction plane:

    

21. Create another new consuction plane 14.5mm from the last construction plane:

    

22. Extrude the Rib profile created in step 11 to the construction planes just created, Set the start to the construction plane object, set the direction to symmetric the measurement to between, and the distance to 3mm:

    

23. Extrude another rib profile to the next construction plane:

    

24. Extrude another rib profile to the next construction plane:

    

25. Extrude another rib profile to the next construction plane:

    

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