this is my remix with the following changes:

• removed "tube" in the middle to make some space to glue the connector
• closed outer openings to prevent light emmiting, can be broken out if required
• safe some material: decrease thickness of body
• add hole in the middle for mounting

I printed this at 800% ad reached d=18,5cm diagonal and d2=16cm size for the hexagon parallel sides: https://rechneronline.de/pi/hexagon.php

Diffusor material: Acrylglas opalweiß 45% 3mm form ebay.de (seller: plexiglasxt)

Learning Curve after i finished the first version:
I glued my 8 hexaleafs togehter with hot glue, but some of them do not stick well after a day on the wall, so you might consider to use a different glue. Another remix might make sense with holes for some M3 screws.

i measured the current and reached max 38W power consumption on primary side, so there is maybe no real need to use a 12V/10A (120W) supply (which stays cold). Also depends on the used LED stripe!

Parts:
Controller: https://www.amazon.de/gp/product/B07DG2M4KD or https://www.amazon.de/gp/product/B07KW1W68R
LED Stripe: https://www.amazon.de/gp/product/B01CNL6LBK
Power Supply: https://www.amazon.de/gp/product/B07JC7MJHV
Connectors: https://www.amazon.de/gp/product/B0761PLK2F
Acryl Diffusors: https://www.ebay.de/itm/PLEXIGLAS-Acrylglas-opalwei%C3%9F-45-3mm-Beleuchtung-in-Ihrer-gew%C3%BCnschten-Form/113833135803

YT video from the inventor: https://youtu.be/2OP-oEbzB6g