Cubic Octahedron - Interlocking puzzle by Christoph Lohe

thingiverse

## Cubic Octahedron ### Interlocking Puzzle by Christoph Lohe Assemble four pieces into an unusual octahedral shape shown in the photo. _Cubic Octahedron_ is a successor to Stewart Coffin's iconic puzzles, requiring several moves to get the last piece in place. ### Printing Instructions Print one copy of `lohe.cubic-octahedron.stl`. This model uses snap joints so pieces can be printed without supports; for this particular puzzle, I recommend using a sturdy PLA filament (or something stronger like PLA+ or ABS) and/or reinforcing with glue due to the fragile nature of some of the joints. After printing, connect all the joints before attempting to solve the puzzle. Snap each male connector into a corresponding female connector (for example, the male connector labeled "A" should connect to the female connector with a matching "A" label on the interior). The joints are designed to be tight, and depending on the printer and filament used, you may need to hammer them into place. If they come out too loose, a drop of superglue will make them more solid (in most cases this shouldn't be necessary, but unfortunately tolerances vary across printers and filaments). For a slightly smaller version that uses less material, print `lohe.cubic-octahedron-smaller.stl` instead. ### The Printable Puzzle Project The [Printable Puzzle Project](https://www.puzzlehub.org/ppp) aims to make available high-quality open-source models of many puzzle designs. All our models are posted with the generous permission of their designers and are licensed for non-commercial use only. Anyone may print copies for their own personal use, but selling or otherwise monetizing them is not permitted. Our puzzles are modeled using the open-source [puzzlecad](https://www.thingiverse.com/thing:3198014) library. The `.scad` file is included with this model in case you want to modify any of its design parameters; more information on how to do this can be found in the PPP Puzzle Modeling tutorial. ### About the Designer Christoph Lohe's innovative output spans an impressive variety of puzzle forms. His designs have attracted increasing attention from puzzle makers and collectors, and have been realized by some of the world's top puzzle craftspeople. His designs are both challenging and beautiful, with several incorporating creative figurative elements, such as a popular series of burr puzzles in the shape of locks. Happy puzzling!