If he hasn't already tried it, look into the Dave Gingery series of books on melting aluminum and casting machine tools. http://www.gingerybooks.com/ http://ww

If he hasn't already tried it, look into the Dave Gingery series of books on melting aluminum and casting machine tools. http://www.gingerybooks.com/ http://www.gingerybooks.com/ A basic sandcasting setup sounds like something your son would be absolutely stoked on.