Fun & Games

The latest DIY ideas, techniques and tools for bikes, rockets, R/C vehicles, toys and other diversions.

DIY Lego Hole Punching Card

There was a lot of excitement over the Lego paper punch kits I posted about last month, as well as some upset that they aren’t currently available in the United States. Filth Wizardry took matters into her own hands and started experimenting with using a standard hole punch and paint chips. After a few tries, […]

Rocket fuel from aluminum and ice

The key to the process is that the metallic aluminum is present as a nano-scale powder, and its oxidation by water thus occurs over a huge surface area and therefore proceeds very quickly, releasing amazing amounts of energy. The video starts with the acoustic mixing of the nano-aluminum with water to make a gray paste which is frozen, in a mold, to make a tubular rocket motor. It then proceeds through various test-bench firings and culminates (at 4:00) in the launch of an actual rocket using the mixture.