Rectangle Block - Interlocking puzzle by Christoph Lohe

thingiverse

## Rectangle Block ### Interlocking Puzzle by Christoph Lohe Disassemble the four pieces from the rectangular frame. _Rectangle Block_ is an extremely challenging Level 29 burr puzzle presented in an unconventional frame. This one is for seasoned puzzle solvers! It is designed to be solved as a disassembly (take-apart) puzzle, and the model is carefully crafted to make this possible - follow the printing instructions _very closely_. ### Printing Instructions Print one copy each of `lohe.rectangle-block.frame.stl`, `lohe.rectangle-block.frame-cap.stl`, `lohe.rectangle-block.pieces-1.stl`, and `lohe.rectangle-block.pieces-2.stl`. To achieve the checker pattern shown in the photo, print `pieces-1` and `pieces-2` in separate colors. I recommend printing `pieces-1` in a durable filament such as PLA+, since the joints may be fragile. Now assemble the two pieces from `pieces-1` by snapping the joints together. For this puzzle, I strongly recommend reinforcing them with glue. __DO NOT ASSEMBLE THE FRAME YET!__ 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 tap them into place. The snap joint concept is discussed further in this tutorial: [Getting Started with Puzzle Printing](https://www.puzzlehub.org/tutorials/getting-started). Now put the puzzle into its assembled state as follows. * Each piece is labeled on its corners with letters W, X, Y, and/or Z. These are guides that indicate how the pieces fit together in their assembled state. * Find the two pieces with a Z on the corner and align them so the Z's exactly touch. You'll see a W and Y meet on their sides, as shown in the second-to-last photo. * Do the same thing with the two pieces with an X on the corner - align them so the X's exactly touch. * Place the two pairs of pieces into the frame, aligned so the W's and Y's touch. You should see the assembly shown in the last photo. * Finally, snap the lid into place over the entire assembly. You're ready to attempt the puzzle! ### 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 of 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, and puzzle designers retain all rights as copyright holders of their work. 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](https://www.puzzlehub.org/tutorials/puzzle-modeling). ### About the Designer Christoph Lohe's innovative output spans an impressive variety of puzzle forms. Lohe's 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!