Triangle Puzzle

At the end of 2021 I found a triangle puzzle here on thingiverse, that I wanted to print. But when I opened it, it always ended in "You reached the end of the internet" ;-)
So I created this puzzle myself, according to the shown picture.

Update on 05/26/2023: I added a cover, so it's possible to save the pieces inside. I fix the cover with a small jumping rubber.