Dear Eastman03, as said unfortunally there are anymore the 2 vids and I'm no the guy who showed this simple technique (I usually make 4" tube dipping rods)
The first hyphotesis is the right one:
1) tap the PVC pipe with the concave cork
2) lube the inner side of PVC pipe
3) pour hot plastisol for around the half of PVC pipe length
4) start to rotate the PVC pipe with an angle more than 45° ... more horizontal the pipe is, more long the tube will be - I apologise but I really don't remember if "Il Gatto" closed also the other side of pipe. I think not
5) cool the PVC pipe under a current fresh water tap
6) with the thin rod (a stiff pc o wire) detach the tube from the PVC pipe - the rod must be used between the external skin of tube and the internal wall of pipe
... simple, but for sure a little bit dangerous: when you put the PVC pipe under the fresh water, using thermal gloves of course, you must be really careful that no one drop of water can enter inside the pipe.
Bye Cami