Headrest Adapter for Herman Miller Mirra 2

I really wanted a headrest for my Mirra 2 chair but couldn't find one of reasonable quality so I bought the Engineered Now headrest for the Aeron, which was getting pretty good reviews on Reddit and forums, and made an adapter to allow me to clamp it on my Mirra 2.

BOM:

• Engineered Now Aeron headrest https://www.amazon.de/dp/B077GH6KBX
• 4x M3 threaded inserts. Both long and short ones fit, I used long ones for more surface area https://www.amazon.de/-/en/KITCHEN-Original-Threaded-Insert-Version/dp/B09CL2XDZ9/?th=1
• 3x M3x12 bolts
• 1x M3x14 bolt (another M3x12 can also be used here)

Sources can be found here.