The kiln is brought up to molten temperatures, causing the glass to flow into the mold. Kiln casting is a type of glass casting in which cold glass is placed over a mold inside of a kiln. Both are versatile approaches that are also used when casting metals. These techniques go back thousands of years. Sand casting and lost wax casting are the most common processes. There are several ways to build a mold to create a unique glass work of art. Typical glass casting techniques include kiln casting and sand casting. Glass casting is the process of melting glass into a mold where it solidifies and creates a glass object. In this guide, you will learn everything from the basics of glass casting to exactly how to get started. License: Attribution-NonCommercial-ShareAlike.In The Crucible’s Glass Casting & Coldworking Department, you can learn everything from how to cast glass in a kiln to finishing techniques in our coldworking studio. You can see on mine that the alginate ripped on the forehead. You will need to stand the back of the head quite a bit because the plaster gauze will leave a rough edge. Once it is cool to the touch, you can break it open to pull out your bust.Īnd voila! you have a head to sculpt upon! Pour the ultracal into the head mold, and let it sit. Plaster will start breaking apart somewhere between 3-10 pulls. I suggest ultracal or a gypsum for a head to sculpt upon because the material is naturally harder. Mix up your ultracal or plaster following directions. Putting the head into a bucket so that there's no need to hold it. This will give you one solid piece to pour your ultracal into. Step 7: Step 6: Seam, Pour, and Break it out!Īt this point, seal the two pieces together with more plaster gauze around the edge, at least 4 layers. Run your fingers along the insides of the alginate and let it naturally let go of their face. You'll have to help the alginate let go of their head, because it has a pretty good suction on it. When they pull this off, have them lean forward and cup the plaster in their hands. Let the plaster set for at least 10-15 minutes. It is also acceptable to mess with your model at this point. Those will cause lumps in the final head casting. Work the gauze as close to the alginate as possible and avoid air pockets. You're going to overlap the plaster gauze over the back piece. After this, start covering the alginate with more plaster gauze. Let the alginate sit for 10 minutes or until completely hardened.Ĭover the edge of the back head plaster piece with vaseline, about 1-2 inches from the edge. Just watch their nose and make certain they are able to breathe. I don't put straws in my model's nose because it distorts the nostrils. This makes it easier to be sure your model can breathe. I generally start with the nose, that way the alginate will harden around their nose first. This alginate will be applied with your hands to the parts of your models face that is not covered with gauze.ĭon't overlap the gauze, the alginate will stick to it and potentially rip. Warm water will make alginate set at a much faster rate. Mix your alginate with cold water following directions on the packet. If it couldn't pull straight off, you've got an undercut. It will, however, cause more sanding at the end.Ĭover the back of the model's head just to the center of the skull and back of the neck, avoid undercuts around the throat and top of the head. Many people will continue to use alginate around the back of the head, but if you don't have the materials plaster gauze will work fine. If you model has long hair, gel the hair down so that it lies flat along the skull.īreak out your plaster gauze and start covering the back of the skull. Tape around the edges of the forehead and neck. Keep alginate away from clothing.Ī bald cap is ideal in this situation, but if you are unfamiliar with bald cap application or are short on funds, saran wrap will do. Alginate does not stick to hair, but it will rip very easily. Ultracal (you can use plaster of paris but I would highly advise against that)įirst things first, have your model take off their shirt and cover them from collarbone down with plastic wrap.I do suggest if you've never done this before to first do a simple face mold first! In this instructable, I'll show you how to make a mold of a head in a fairly cheap and easy way. At these points, you're going to want to make a mold of your actor/model's head and sculpt directly on top of that. You can buy these heads at a few different online stores, but no prosthetic you sculpt and mold off of those are going to fit perfectly on your model. A lot of prosthetics are sculpted on top of a generic head.
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