My lovely wife bought a new LED chain, but we had no way of fasten it to our wall outside.. So the solution was obvious, I had to make a custom hook for the chain.

End result
Justing off my calipers and started to draw things up in fusion 360.

Sketch of the hook
I went for a repeating design..

After extrusion and mirroring stuff
Export to STL and import it into Simplify3D ..

Slicing the model
The print took around 2 hours for 5 hooks.
The hook is very simple to use, just insert and turn it 90 degrees.