This video describes casting a tubular automotive coolant manifold using the lost foam method. This is the part that initially got me interested in lost foam casting 8 years ago. Many people ask me how I make the tubular foam patterns so I thought I'd make this video. For the last couple of years I've used my CNC router, but for the previous 6 years I used hand guided templates and a Pin Router. There are links below to www.TheHome Foundry.org. You may need to join the forum to see full size pictures. Best, Kelly
http://forums.thehomefoundry.org/index.php?threads/tubular-lost-foam.11/
http://forums.thehomefoundry.org/index.php?threads/automotive-water-neck.90/