Yes Peter something like that. I thought it very impressive at the time but evidently not impressive enough for me to remember what it was he was doing.Oh wait yes that was it he put a rod in the tube and pulled against the draw plate umm well yes you are right it was making spiral tube.
Anyways he was using the draw plate to stop the tube and exert the pressure at the same time, ha sometimes I am a complete flake I know. I know what I mean :0)
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