Six Pieces Star Puzzle
This is a design based on a puzzle I have had for 30 years. Six equal pieces can be assembled to form a star.
The pieces fit exactly, so unless your printing quality is superb, you may need to polish the two cuts of each piece (where it touches the others).
If you are not interested in trying to figure how to assemble them, the solution is presented in
https://www.youtube.com/watch?v=p4yy30KvoAI
Pieces look a bit different, but the idea is the same.
I provided two solids: the piece, and the whole star. The star is given so that you see what it should look like, but what you should print are six copies of the single piece. Unless you want the whole star as a single solid, of course.