To cast this piece, I had to paint in multiple layers of molten wax to achieve the thickness I wanted. For bronze or aluminum casting I make my wax pattern wall thickness between 3/16" to 1/4".
A trick I do to check wax for proper thickness is hold the wax up to a light and if you can see light thru the wax it's too thin. I also use a wax mixture between Red Casting Wax and Brown Microcrystalline Wax, so this ruke may not apply to lighter colored waxes
This is a photo of the other two wax sections as they are coming out of the plaster molds.
A closeup after I patched the bubbles with utility patch wax and then polished the wax using a nylon window screen and mineral spirits. Lighter fluid works great too.
A few views of the piece as it will be in the end. It really looks like melted chocolate which is dripping down a wall and shelf.
This is an article in the Tahoe Daily Tribune, which features our foundry:
Hard work Metal casting and fabricating classes at college turn out works of art