2x3x4 Twisty Puzzle

thingiverse

This is a 2x3x4 A Rubik's type puzzle in cuboid shape, capable of shapeshifting. To create your own, print each piece as named - "nameofthepiece_xQuantity.stl" - and add an M3 screw (small, about 0.5 cm long) and a spring. Assembly requires fitting the "2x3x4 A" into "2x2x3 A" pieces and same for "B" pieces. Three "middle" pieces fit into "2x2x1" pieces, while the last one fits into the core. Once assembled partly as described, finishing is straightforward. To insert the screw and spring, place all pieces correctly then rotate the 2x2x1 part 90 degrees to access through fillets into the hole. I printed this version and found it to be pretty good overall, with only one flaw - corners can pop mid-turn. To avoid or reduce this issue, I modified the design slightly, which is the version posted here.