After a little straightening up I cast a plaster block the thickness I wanted to get the depth I want for the lion block. The plaster provides a firm solid surface for the clay, is easy to cast square, and since plaster stays damp a long time after it’s cast, it won’t shrink or bother the clay while I work on it. After applying a layer of clay around all four sides I used a metal carpenters’ square as a scraper to get reasonably 90 degree to the face and back- sides.
Doing this also allows for having the clay texture on all the sides with no seam where plaster or other material would meet the clay and have a different texture.
So now he will sit in plastic a little while until I get to refining and cleaning him up a bit as the clay gets a little firmer.
Once that’s done I will be making the silicone mold of the still very moist clay model by next weekend.
This rubber is not terribly expensive as silicone rubber goes, but it is a >platinum< cured compound which should offer a clue on the cost.
It runs about $200 for what they call a “one gallon kit”.
The mold is done and the first cast made and finished for some photos. It took 6 quarts to fill the mold which means when I go to make the mold for clay pressing it will take that much rubber to fill this to make a positive I can take the plaster piece mold off of, might be able to do it with less if I push something in the open back to occupy space to raise the liquid rubber level up to the top.
The photo is of the first cast and with one of my finishes on it. They will make nice bookends too.
The rubber lion is out now, next to the earlier cast, soon it will get a plaster mold taken off it.