Evil Twin 3x3

thingiverse

The Evil Twin is a puzzle that appears to be a standard 3x3 Rubik's Cube but actually consists of two 2x2 puzzles fused together at the corner and then enhanced with additional cubies to mimic the look of a 3x3 cube. This unique design was first created by Mike Grimsley in 2005. The example shown here combines 24mm 2x2s with 3D-printed extensions, which I designed and invite you to print yourself to create your own Evil Twin puzzle. This exciting puzzle was featured on my "Print It Yourself" review series, where I provide a detailed overview of how the puzzle is made and how it functions. For a closer look at the making process, check out the episode: https://www.youtube.com/watch?v=W10LlpkabKo To assemble your Evil Twin puzzle, you'll need the following parts: -2x 24mm 2x2 Puzzle (I used mini Eastsheen 2x2s) -1x p2_Center.stl -14x p2_CornerExtension.stl -12x p2_Cubie.stl To begin, select a corner on each of the mini 2x2 puzzles and cut off part of it diagonally. Your goal is to allow both mini 2x2s to fit seamlessly into the Center piece without touching. Once you've removed enough material, attach the cut-off corners into the Center piece, linking the two mini 2x2s together. Next, glue CornerExtension pieces onto the exposed mini 2x2 pieces, one extension per corner. This will result in a fused 2x2 with 19mm cubies. Now, place the Fused 2x2 on a flat surface and identify the three distinct layers: bottom, middle, and top. To create the appearance of a 3x3 cube, you'll need to glue Cubies into the empty spaces within their respective layers. It's essential to glue cubies only within their designated layer to ensure proper function. If you have any questions or concerns during assembly, feel free to ask for guidance.