Super simple model of the famous triangle puzzle in which you need to include the small white square. Print it to give to friends and see if they can understand how it fits.Very simple 17g design that prints very easily and can be printed in separate pieces of the colors you want.As you see in the video, the pieces fit perfectly and it is not necessary to tighten.If you want to know the solution visit my Instagram:3d_rivas that I will publish the video of the solution.