How do you cast a lost wax?

Asked By: Aneta Ander | Last Updated: 17th June, 2020
Category: hobbies and interests jewelry making
4.6/5 (48 Views . 21 Votes)
Lost Wax Casting
  1. Step 1: Wax Work 1. The beginning of one of my flowers.
  2. Step 2: Wax Work 2. Another flower ring, almost finished.
  3. Step 3: Wax Work 3. This flower is all sprued!
  4. Step 4: Weighing Them Out.
  5. Step 5: Attach to Sprue Base.
  6. Step 6: Place Flask on Base.
  7. Step 7: Set Up for Investing.
  8. Step 8: Weigh Investment.

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Hereof, what wax is used for lost wax casting?

Microcrystalline wax is pliable and slightly sticky. It is medium soft and has a smaller crystal structure than beeswax or paraffin. Derived from petroleum, this is one of the most common waxes used by lost wax casting jewelry sculptors.

Secondly, why Investment casting is called lost wax process? Investment casting is also known as lost wax casting, because in the beginning wax model is created as per your desired casting pattern, then liquid metal is inserted into that mold and at last the wax model is melted and wipe-out. The metal gets harden and get the desired shape similar to casting pattern.

Then, what is lost wax investment casting?

Lost-wax casting (also called "investment casting", "precision casting", or cire perdue which has been adopted into English from the French) is the process by which a duplicate metal sculpture (often silver, gold, brass or bronze) is cast from an original sculpture. Intricate works can be achieved by this method.

What would be considered a disadvantage of lost wax casting?

Disadvantage of Lost-Wax Moulding: This process limits the larger objects due to equipment size limits, 2. The cost of equipment and process is high.

30 Related Question Answers Found

How do I make a mold for lost wax casting?

How to Make a Mold for Lost Wax Casting
  1. Step 1: Make a Plaster Mixture. Use two parts plaster powder to one part water.
  2. Step 2: Stir.
  3. Step 3: Imbed Wax Sculpture.
  4. Step 4: Allow Time to Set.
  5. Step 5: Pop the Mold Out of the Container.
  6. Step 6: Bake the Mold.

What are the advantages of lost wax technique?

Lost wax investment casting provides exact shapes which leads to lower material cost. Lost wax investment casting reduces the expensive machining operations that reduces initial tooling cost.

How do you remove wax from plaster molds?

Place the wax eagle into another mold box, or cup. Pour the plaster around the wax figure and let solidify for at least an hour. Two hours or even overnight is better. Cut away the mold box to Remove the plaster mold from the cup and Now comes the lost wax process.

How do you cast bronze at home?

Making a Sand Cast Bronze Sculpture
  1. Step 1: Start Making the Mold. Adding sand to the flask.
  2. Step 2: Pressing the Pattern Into the Sand.
  3. Step 3: Ramming the Sand.
  4. Step 4: Making the 2nd Half of the Mold.
  5. Step 5: Adding Sand to the Flask.
  6. Step 6: Ramming the Sand.
  7. Step 7: Screed the Mold.
  8. Step 8: Separate the Mold.

What is jewelry wax?


Jewelry wax is a specially designed wax used in the creation of jewelry pieces through the lost wax casting process. After the wax model of the piece is complete, it is covered with plaster investment and burnt away or "lost." The void left behind from the melted wax is the mold for the molten metal when cast.

What is wax pattern?

wax pattern. A molded or carved pattern in wax used extensively in dentistry and jewelry-making whereby casts are made using the lost wax technique.

What are molds made of?

A mold or mould is a hollowed-out block that is filled with a liquid or pliable material such as plastic, glass, metal, or ceramic raw material. The liquid hardens or sets inside the mold, adopting its shape. A mold is the counterpart to a cast.

What is the difference between sand casting and investment casting?

Another major difference between investment and sand casting is the surface finish of the final product. Investment casting uses liquid slurry to form the molds, so cast parts can have almost any shape, giving engineers extraordinary freedom in their designs to add intricate features and complex shapes.

What is water glass casting?

What is Water Glass Casting. Water glass casting is also called sodium silicate casting. Its casting process is very similar to investment casting (that is the lost wax investment casing method). It is a technology uses water glass as the binder for the shell to cast.

What materials can be investment cast?


Many materials are suitable for investment casting; examples are stainless steel alloys, brass, aluminium, carbon steel and glass. The material is poured into a cavity in a refractory material that is an exact duplicate of the desired part.

What is the process of investment casting?

Investment casting is a manufacturing process in which a wax pattern is coated with a refractory ceramic material. The wax is melted out and molten metal is poured into the cavity where the wax pattern was. The metal solidifies within the ceramic mold and then the metal casting is broken out.

How is bronze cast?

The bronze ingots (bronze bars) are heated to liquid. The ceramic mold is then filled with molten bronze (bronze is an alloy of 85% copper, 5% lead, 5% tin and 5% zinc). The price of bronze statues is based on all the labor and the price of mostly copper and all the sophisticated materials.

How is casting done in sculpture?

Carving is a subtractive process whereby material is systematically eliminated from the outside in. Casting: Sculptures that are cast are made from a material that is melted down—usually a metal—that is then poured into a mold. The mold is allowed to cool, thereby hardening the metal, usually bronze.

How accurate is investment casting?

Detail and Accuracy
Investment casting can achieve excellent detail and accuracy – in +/- 0.005 inch per inch range. Very little additional machining is necessary for details and features.

What is continuous casting machine?


Continuous casting, also called strand casting, is the process whereby molten metal is solidified into a "semifinished" billet, bloom, or slab for subsequent rolling in the finishing mills. This process is used most frequently to cast steel (in terms of tonnage cast).

What is casting and types of casting?

The Metal Casting or just Casting process may be divided into two groups: Hot Forming Process. Examples are Centrifugal casting, Extrusion, Forging, Full mold casting, Investment casting, Permanent or Gravity Die casting, Plaster mold casting, Sand Casting, Shell Mold casting.

What are the disadvantages of casting?

Along these advantages, casting has following disadvantages.
  • It gives poor surface finish and mostly requires surface finish operation.
  • Casting defects involves in this process.
  • It gives low fatigue strength compare to forging.
  • It is not economical for mass production.