RMU MK3 external mounting for enclosure

I have an Ikea Lack enclosure V2 for my MK3S+ with MMU2S.

After building a RMU MK3 I wanted to mount the buffer on the outside of the case. I didn't find any (good) solutions on the internet. So I made my own.

The buffer can be found here https://filamentbuffer.co.uk/

If you are interested in the buffer check out https://www.youtube.com/watch?v=tYeIUff-35k
Hint: There is coupon in the description if you want to buy it.

Model can be found in OnShape:
https://cad.onshape.com/documents/29f402721f5d22d1fc0fb1cc/w/e256f4c38ae442ea71ac7828/e/43cbb03e8b1de132b2dc0631