Dove Tail Puzzle

First of all this is my very first design using Fusion 360. I did not have any experiences or knowledge about 3D Software or Fusion 360. I did playing around a bit with Tinkercad couple years ago. So, I would like to very much thank to Lars Christensen for his Great Great Tutorial on Fusion 360, which you could find it here: https://www.youtube.com/channel/UCo29kn3d9ziFUZGZ50VKvWA

First time I saw this puzzle is from YouTube video here: https://www.youtube.com/watch?v=xp-PENvptu0 It is a good idea to keep something that we don't want others to find it easily. Since I did not know where to buy it and in addition to my progress 'learning by doing' in Fusion 360, I made this puzzle.

However you need to get 2 circle magnets 6mm in diameter, and 3mm in thickness, and 1 Steel Bearing Ball (https://www.amazon.com/gp/product/B007B2AG3G/ref=oh_aui_search_detailpage?ie=UTF8&psc=1)