Thanks for the great design.
I've adjusted it a bit for my purposes.
I am using an Iphone 12 Pro Max with a transparent flat case.
But it also works without a cover. Then there is a little air below.
I don't use the original MagSafe but an alternative from Amazon. It was cheaper but only supplies 10 watts. According to the item description, it should be 15 watts.
I will test the device and if it is not suitable for me, i convert the holder for the original MagSafe.
The charger fits perfectly and does not need to be glued.
Make sure your printer is set up well.

Charging Adapter:
https://www.amazon.de/osloon-Magnetisches-kabelloses-Qi-zertifiziertes-Schnellladepad/dp/B08MS5Y47J/ref=sr_1_17?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=magnetisch+iphone+ladeger%C3%A4t&qid=1605965381&sr=8-17

Case:
https://www.amazon.de/gp/product/B08DK3F355/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

MK3

Prusa i3

No

No

0.16

30%