Kongming lock is a traditional Chinese intellectual toy. It is said that the toy was invented by Zhuge Kongming some years ago based on the principles of the eight-diagram metaphysics. It was widely popular among the folks. The concave and convex pa
Turn your drill press into a drum sander by making your own spindles to hold sandpaper. This easy afternoon workshop project is great for sanding inside a concave curve, a difficult task for belt or random orbital sanders.
Grimm's Large Octagon Form Building Set - Wooden Mosaic Block Puzzle, 72 Triangles, At nearly 12 inches across, this colorful geometric block puzzle is Grimm's largest Octagon. It's a free-form puzzle for making your own creations and can also be used for