The most wonderful time of the year can be made even more wonderful by designing and 3D printing your own ornaments. I’ll show you how you can easily design the ornament in the above picture using Fusion 360. After going through the steps below, make sure to watch the video to tie it all together. The stl file for this design can be downloaded from link below. Use the promo code "FREESTL" to download it for free. https://www.desktopmakes.com/product-page/spiral-ornament
Click on Sketch - Create Sketch, select the vertical plane and sketch the following profile. Use the line tool to create the vertical line from the origin and give it a dimension of 80mm. Create another line from the base of the first line at the origin 5mm to the right. Finally use the Three Point Arc to connect the edge of the second line to the top point on the vertical line. Give the arc a radius of 50mm.
Next we’ll take that profile sketch and use the revolve tool to create a solid body. Select Create - Revolve from the toolbar. Click on Profile in the dialog box and select the profile sketch. For Axis, click on the left edge of the sketch. This will revolve the sketch 360 degrees and give you the above shape. Click ok on the dialog box.
We want the body we just created to be hollow on the inside so we’ll use the Shell tool. Select Modify - Shell and for Faces/Body select the bottom flat surface of the body. Give it an inside thickness of 5mm and set the Direction to inside. Click OK. It looks as if nothing happened from the outside so let’s create a section analysis to take a look at the inside.