Kudos to Wayne Seidl for his Bikextruder in Clay Times (Nov/Dec 2007, pg 64)! For those who didn't get this issue, the Bikextruder is made totally from parts scrounged after a hurricane came through his part of Florida. A vertical piece of PVC pipe has a slot in it where you insert a plug of clay, then you turn a bicycle wheel whose sprocket drives a chain attached to the plunger. Clever design... good job, Wayne!
Best regards,
Bob Masta DAQARTA v3.50 Data AcQuisition And Real-Time Analysis