I needed to make lots of corbels for the Kinfeld.
To see how I made the initial corbel for pressing in the mold click HERE and scroll down.
Knead in your hand until they are mixed.
Once they are dry, sand and paint them. I discovered if they dried in the clay they tended to curve. So I immediately took them out and patted them on the table to keep them flat.
For the very small ones I cut a long piece of molding into small sections (shown below). My blade teeth were not fine enough so I had to spackle and sand the sides. I would recommend putting a better blade on your band saw so you won't have to do this step!
Still have some touching up to do, but there they are!