This Instructable is connected to Arlene Shechet’s exhibition Meissen Recast currently on view at the RISD Museum.
Meissen Recast plays with the idea of molds, the casings that shape an object’s final form. Shechet reinterprets plaster molds by casting them in porcelain and calling attention to their usually unseen details. The process of mold-making and casting invites creative experimentation, but follows rules of precise timing and size.
Taking us through the steps involved in casting objects, Marisa Marofske (RISD BFA Painting, 2014) uses the form of a dog toy to create an array of iconic, colorful donuts.
Step 1: Create a mold sized to your object.
This could be an elaborate form made out of acrylic, but for some materials it works just as well to create a mold out of cardboard.
“I started by tracing out the shape of the object. You want the walls of the mold to be [higher than the original object]. You would want to score, and then obviously you’d want to cut.
And then what happens is this becomes a really simple box.”
Step 2: Tape and seal off the cardboard mold.
It’s essential that none of the material escapes the box.
“You can just use any kind of masking tape, anything. You’re not going to have any leaks, which is enemy number one in casting. You could [also] use packing tape on the inside.”
Step 3: Glue the original object down.
This way, the object won’t rise when the casting material is poured around it.
“Since the bottom is flat like this, the way I’m going to do it is glue it down flat on the surface of the mold itself and fill it above. And then [the flat bottom] will become the top of the mold.
You just want to make sure you have a decent amount of rubber between the object part of the cast and the top of the mold.”