Here is a great video delving into the mathematics of the puzzle:Graph Theory is not typically an elementary school topic but this is a great introduction into abstraction and generalization with lines, shapes and colors
Are the wooden end plugs for the drum a purchased part? I don't see them on the parts list. Can you detail the process of the drum construction a bit if you have an opportunity?Thanks!
Are you using a special solder? Your instructions say welding wire but I see a roll of what looks like solder. Please advise.Thanks!
DIY Glow 3D Printer