The TriTangle puzzle was conceived when I noticed that a certain slice angle through a trigonal dipyramid almost showed 5-way symmetry. After making adjustments to the shape, I was able to create true 5-way symmetry, which allows the shape-shifting geometry of this puzzle. The TriTangle puzzle turns on three axes, which can all turn in increments of 72 degrees when not blocked by one of the three large points. Every move of the TriTangle creates a new shape, and despite having only seven moving parts, the TriTangle can be tricky to solve.
The TriTangle puzzle comes as a DIY kit of parts, and you will need to supply your own stickers. The templates for the stickers are available in the instructions forum.
I recommend that unless you are familiar with the process of dyeing these parts, you purchase the puzzle in "Black Strong & Flexible". It costs a bit more than the white material, but it's worth it since the finished puzzle will look and work better. TriTangle also requires screws and springs to assemble. These can be purchased through a few different online puzzle sellers. The springs I used came from this shop. You'll need three of the springs, combined with three 12mm M3 screws, which you'll need to purchase separately.