The possibilities of what you can create with wax, fire, and molten metal are endless.
Step 1: Carve and Shape Wax
Carve your project in wax. Different types of wax can be used for your desired outcome. Sculpture wax is soft and can be shaped like clay, while some wax is harder and can be used to achieve textures in cast jewelry.
Step 2: Attach Sprues and Base
Attach sprues and weigh your wax model with the sprues attached. Melt wax onto the button of your flask base, and attach your wax model to the base.
Step 3: Invest
Measure the ratio of investment powder to water based on the weight of your model. Add the investment to water and mix until smooth (think pancakes). Place the investment mixture in a vacuum chamber for about 30 seconds, then pour it carefully into your flask. Let it dry overnight.
Step 4: Wax Burnout
Place your flask in the kiln to remove the wax and prepare your flask for casting. Timing and temperature will be adjusted according to the size of your flask. Then, gear up! Put on your safety glasses and gloves before handling your hot flask.
Step 5: Casting
Using an oxy-acetylene torch, melt the metals in your crucible and occasionally stir with a stirring rod. When the metals are completely melted, unlock the centrifuge, activating it, and flood the molten metal into your flask. The centrifuge will spin for about one minute. Remove your flask from the cradle using tongs
Step 6: Quench
After your flask cools and is no longer glowing red, pick up your flask with a pair of tongs and completely submerge it in the quenching bucket until the bubbling stops. Try to keep your flask horizontal so your casting does not slip out and fall to the bottom of the bucket. Scrape the soft investment out of the flask and extract your casting.