SOLVINDEN bulb adapter

The Ikea Solvinden with the blue cage, comes with a integrated Led light, which is not possible to integrate in the Ikea Smart Home ecosystem. They are intended for outdoor use. 

This adapter attaches to HEMMA (maybe other fixtures too) and the parts of the Solvinden fit snuggly. Now you can use regular bulbs.

https://www.ikea.com/ch/en/p/hemma-cord-set-white-10386577/

Use enough walls to make the part strong, I used 4. 

I uploaded the fusion 360 file to change tolerances. If you go to the right on the timeline it lets you print just a quarter of the adapter, to test the fit.