One of the first questions people ask when they hear "investment casting" is: what is being invested?
The short answer: The name comes from the Latin word investire — meaning "to clothe" or "to surround." In investment casting, the wax pattern is "invested" (clothed) in a ceramic shell. The term has nothing to do with financial investment. Historical origin:- Ancient civilizations (Egypt, Mesopotamia, China) used the "lost wax" process for jewelry and art over 5,000 years ago
- The term "investment casting" was formalized in the early 20th century when the process was industrialized for dental and jewelry applications
- During World War II, the process was adapted for precision aerospace components (turbine blades), and the name "investment casting" became the industry standard
| Term | Origin | Modern Usage |
|---|---|---|
| Lost wax | Ancient — describes the wax being "lost" (melted out) | Art, jewelry, historical context |
| Investment casting | Industrial — describes the ceramic shell being "invested" around the pattern | Manufacturing engineering, industrial specifications |
| Precision casting | Modern marketing term | Used interchangeably with investment casting |
The term "investment" comes from the Latin investire (to clothe or surround). The wax pattern is "invested" (clothed) in a ceramic shell. The name has nothing to do with money — it refers to the ceramic shell being literally invested around the pattern. The alternative name "lost wax" describes what happens to the wax pattern during dewaxing.