You’ve all seen these classic puzzles. They have a objective, disassemble the locked rings, or make a shape using only 3 of the 4 pieces. Well, have you ever wondered how they are made? You’re in luck, William L. Hunter drew up some blueprints for a dozen or so of these different mind puzzles. You can print them out and follow them to make your own puzzle, or just frame them yourself.
Take a look at the full imgur album to get some ideas. It looks and sounds like these images came from this book: Wood-turning problems in blueprint form. Sadly, Amazon doesn’t list it in stock, nor is another of William L. Hunter’s books available.