I built mine from plans I found on a Google search. I don't have the link, that was 5+years ago. Works great.
No new sculpts or castings of King Swine or Larry. The molds were not producing good castings any more and I just never got around to making new ones. @Greasebat , remember you will have to design your molds to fit your rotocaster. Also, Smooth On sells a plastic just for roto casting, it cures slower than regular resins.
Sorry to hear that @guf. I'm thankful that I picked up the Larrys and King Swine when I did then. They're both great, unique resin toys, but I'm especially taken with King Swine.