![]() ![]() Pour this water back out into a container and weigh how much water you used in grams. Pour water into the mold until it is full. Use a simple water displacement formula to decide how much glass you will need. Once the wax is melted out, rinse the mold with boiling water to remove any residual wax. Make sure to wear welding gloves so you don’t burn yourself. Shoot steam inside of the mold with a wallpaper steaming, melting out of all of the wax inside. If you have a larger mold, prop it up on a grate with a plastic bucket underneath to collect the wax. Heat in short bursts in the microwave until all of the wax has dripped into the small container. Remove any metal clamps you might have added to your mold, then prop it up on clay supports over a small container underneath to collect the wax. The easiest way to melt wax out of a small mold is in a microwave. It is important to avoid any bubbles because they will create holes on your final sculpture. This creates a vibration and pushes the oxygen up and the material down. Pro tip!While you are pouring, ask a friend to knock on the work table to push bubbles up out of the investment. Pour the investment into the box and let it sit for 30 minutes. Plaster gives the mold support and silica has a high refractory, so it can withstand a lot of heat.īuild a simple wooden box around your wax model to secure the mold. ![]() Mix equal parts by weight of plaster, silica, and water together until it has the consistency of heavy cream. When working with dry materials, make sure that your work area is well ventilated, and wear a respirator when working with dry investment. Make sure to attach a wax reservoir to your design for the glass to flow through. It can be used as an adhesive in investment castings. This wax is flexible at low temperatures, making it easily moldable. In The Crucible’s Glass Casting and Coldworking Department, we use Victoria Brown wax because it is very versatile. You may use any type of wax microcrystalline, paraffin, or beeswax all work well. Shape your three-dimensional model in wax and hollow it out if possible. As your piece gets thicker, kiln firing times can easily stretch into weeks at a time. Any glass sculpture over one inch in thickness will take over 24 hours total in the kiln. How to cast glass in 8 steps Step 1: Design your pieceĭraw out your project before you begin shaping it in wax. ![]() In the final stage of this process, you will use a grinder, belt sander, and more to polish and finish your piece. In this guide, we walk you through how to use a wallpaper steamer to melt the wax out of your mold. Kiln furniture is used inside of the kiln during firing to ensure that the molds and components do not deform or stick to one another. Kiln and kiln furnitureĪ kiln large enough to fit your mold is necessary for melting the glass into your mold and annealing. ScaleĪ gram scale is necessary for making your investment and calculating how much glass you will need. Plaster gives the mold support and silica has a high refractory, so it can withstand a lot of heat. You can make your own molds using a combination of plaster and silica. Many experienced wax sculptors swear by repurposing dental tools in order to effectively sculpt and carve unique designs in wax. Shape it with texturing tools, a soldering iron, and a heat gun. WaxĬreate your design in wax before building a mold around it. Make sure to have heavy-duty welding gloves when melting wax out of the mold. Wear a respirator in a well-ventilated space for mixing your investment. The glass object is annealed and cooled as the kiln is slowly brought back down to room temperature.Įquipment needed for glass casting Safety equipment 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. 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. ![]()
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