The Pyramid Puzzle

This is a puzzle that I remember from my childhood. The pieces can be stacked in a certain way to resemble a pyramid. It may look simple at first, but takes some thinking to get to the solution. The puzzle pieces (without the container) can be printed in an hour. After that you connect the halves with 5 to 8 mm long filament pieces as shown in the pictures.Use a bit of glue if the halves don't stick together well enough. Happy puzzling!