This is a demonstration of processing a twigs into heat-shrinkable tubes using a carbon ring heater.

Please check the following site for more information.

Related page:

Heat shrink tube processing of reinforcing bars Heat shrink tube processing of copper tube Heat shrink tube processing of glass tube Heat shrink tube processing for electric wires Heat shrink tube processing of PVC pipe Heat shrink tube processing for paper tube Heat shrink tube processing of stainless steel pipe Heat shrink tube processing of aluminum pipe