A rotatable screw connected to the upper shaping form provides for moving {HEAD ~ such form} from an elevated position spaced above the open top chamber end, to {TAIL ~ a lowered position} extended into and through the chamber 
to
A rotatable screw connected to the upper shaping form provides for moving { HEAD ~ such form } from an elevated position spaced above the open top chamber end , to { TAIL ~ a lowered position } extended into and through the chamber
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH