SCULPTING PROCESS

This is an example of what it takes to make a mold. As you can see it's a multiple step process.

Fig 1.

Step 1. SCULPTING

First I sculpt figurine in oil-based clay. Hardness of clay is a mete of preferences. Harder clay does keep details better but it's harder to work with. So, I try to make it as easy as I can without sacrificing quality. During sculpting process I always have to keep in mind where the seem-line will go. To make pieces more three dimensional sometimes I use an "add-ons". Like on this cherub figurine I decided to make a dove an add-on. All that needs to be decided during sculpting stage.

Fig 2.
Fig 3.

Step 2. MAKING A WASTE MOLD

I use oil-based clay, preferably of a different color to clay around my figurine, along the seem-line. Add-on piece treated the same way but separately. After that I mix plaster and brush it on my figurine. When I build up layer about 1/4" I usually add extra plaster by hand. When plaster is set I remove clay from seem-line and make keys. I usually use hand drill for it. Then I apply thing layer of vaseline on the service of my waste mold and repeat process from other side.

Fig 4.
Fig 5.

Step 3. CASTING FIGURINE IN WAX

When plaster does set up I open waste-mold and remove clay figure from it. Then go over it and re-detail waste-mold as much as I can. When I am done waste-mold look like that - see (Fig 5). Then I submerge it under water for 15-20 minutes to saturate plaster with water (Fig 6). That will prevent hot wax go in to pores and stick to my mold. Then I remove remaining water and strap it tight see (Fig 7). By that time I have a pot with melted wax ready and pour it into waste mold.

Fig 6. Fig 7 Fig 8.

Step 4. REDETAILING SCULPTURE IN WAX

After I get my sculpture cast in wax, I go over it re-detailing it again. Wax can hold details much better then clay can. That allows me to make much finer details. "Ad-ons" are attached using plaster. That allows me to key attachment in to piece exactly..

Step 5. MAKING A MASTER MOLD

Step 6. SHAPING A MASTER MOLD