Tetris Puzzle Cube

This puzzle cube is nice to have on a desk or table; fun to put together and satisfying to know that the cube is solid when put together. I designed something similar in high school without tolerances and it did not fit together (no surprise). A couple weeks ago I decided to start from scratch and give it another shot and it came out pretty nice. I designed this in solidworks if people want the SLDPRT or STEP files so that they can customize or add their own initials or picture to outside surfaces, ask in the comments and I can do that.