1-4 Sequential Puzzle

This is yet another puzzle I saw while watching Chris Ramsay's videos (awesome, by the way. Check them out). I figured I could make a 3d model, and here it is. I made the tolerances generous since looseness doesn't matter. I DID NOT DESIGN THIS PUZZLE. I will not post the solution, so as not to ruin it for you, but I will post a video to Chris Ramsay's video where he solves it. If/when you post a make, thank you (I've never had someone post a make on my designs).
https://www.youtube.com/watch?v=gRDmW5lxU6M
Some pieces need supports, I recommend using a hair dryer to make them easy to remove. The pieces are already oriented (using Meshmixer, a great free mesh editing program) in the most efficient way possible. The puzzle involves four pieces and a frame. The goal is to get the pieces inside the frame to match the picture (see the cover picture).
Like this:
1 2
3 4
It is more difficult than you might think. Try it out!
If you like puzzles like this, try my other (and in my opinion bet