HackerMaker

Cool Metal Foundry Here we see Grant Thompson, The King of Random use his home made charcoal powered metal foundry to melt aluminium cans for casting. For details on the casting procedure, see his other video How To Turn Styrofoam, Into Solid Aluminum .

Simple electric motors From the Russian site Zabatsay , some demonstration to build a simple electric motor, requires: A Single AA battery A couple of regular steel paper clips Some sticky tape Some enamelled copper wire or verowire A knife or scraper I don't know why it works properly with a DC power supply and no brushes.  I think it maybe to do with an irregularly formed coil so that the magnetic field is uneven and there can be an average force. VIDEO WARNING : The background music is too funky for you, don't click to view!

Make a coffee machine The excellent Rulof Maker shows how to make a coffee machine out of old lamps and light bulbs. Points for using magnets, and bonus points for using Magnetix magnets.