FreeCAD: Tutorial Smartphone Cover (1/3)

Summary

What we will create?: Smartphone cover

Model information

A size of smartphone: 123.83×58.57×7.6 mm
A space between smartphone and case: 1 mm, case thickness: 1.2 mm
A radius of corner roundness: 11.6 mm

Note: These values are not based on an actual smartphone. If you want to create a smartphone case for REAL smartphone, tune-up the values for the smartphone.

Mouse operation

Creating a basic solid

1. Creating a sketch plane

   Switch workbench to Part Design workbench.

   create a new sketch plane and select XY-Plane in the dialog. Click OK to create sketch plane.

2. Creating a basic shape

   Select rectangle and select 2 points on sketch plane to create a rectangle. Right-click to finish creating the rectangle.

   

   Select fillet and click 2 edges forming corner. Create a fillet at the four corners by repeating the same operation. Right-click to finish creating the fillet.

   

3. Specifying sizes

   Select the arc and select radius constraint to set size of fillet 12.1 mm. Set all fillets to same size by repeating the same operation. Right-click to finish constraining the radius.

   

   

   Select 2 points from upper edge and lower edge and select vertical distance constraint to set the length of the edge to 124.83 mm. Similarly, select 2 points from left edge and right edge and select horizontal distance constraint to set the length of the edge to 59.57 mm.

   

   Select a point on the sketch and constrain it to the origin of sketch plane with coincident constraint. By this operation, the sketch will be fully contained and be displayed with green lines.

   

4. Exiting sketch edit

   Click Close on Task tab to exit sketch edit.

   

5. Extrusion

   Select the created sketch in model tree and execute pad. On a dialog, set 7.6 mm as extrusion length and click OK.

   

   

Hollowing the solid