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Investment Casting

How the Investment Casting Process Works?

At Invent Cast, investment casting isn’t just a method—it’s a precision-driven journey from wax to metal, crafted with consistency at every stage. We follow a refined, quality-focused process to ensure each component we deliver meets the highest performance standards.

Our Step-by-Step Investment Casting Process

Investment casting involves a series of carefully controlled steps that transform a wax pattern into a durable, high-precision metal component. Here’s how we do it at Invent Cast:

Step 1

Wax Pattern Creation

High-quality wax replicas of the part are produced using precision tooling or 3D-printed molds.

Step 2

Pattern Assembly

Multiple wax patterns are attached to a central wax runner (called a tree), forming a cluster ready for shell building.
Step 3

Shell Building

The wax assembly is repeatedly dipped into ceramic slurry and coated with refractory sand to form a hard outer shell.
Step 4

Dewaxing

The complete shell is placed in an autoclave or furnace to remove the wax, leaving behind a hollow mold.
Step 5

Shell Firing

The shell is heated at high temperatures to increase its strength and eliminate any residual wax traces.
Step 6

Metal Pouring

Molten metal is poured into the hot ceramic shell, filling the cavity created by the original wax pattern.
Step 7

Cooling & Shell Removal

Once cooled, the ceramic shell is broken away, revealing the rough metal casting.
Step 8

Machining

Secondary processes like drilling, threading, or CNC machining are applied for tight tolerances and specific geometries.
Step 9

Final Inspection & Dispatch

Each part undergoes dimensional inspection and quality checks before being packed for delivery.

…and what you get

Advantages of Our Process

Custom tooling built by our own engineers ensures better quality and faster turnarounds.

We regularly achieve tolerances as low as ±0.1mm, suitable for complex assemblies.

Shell quality and pouring control allow us to deliver finishes as good as 3.2 Ra, reducing machining time.

Stainless steel, carbon steel, duplex, nickel alloys — all cast with optimized parameters and performance reliability.

Our process controls and digital tracking ensure repeatability, especially for high-volume production.

Streamlined shell-building and in-house pattern making cut project timelines significantly.

Invent Cast delivers precision-engineered components through advanced investment casting, forging, and sand casting—serving critical industries with unmatched reliability.

More About Us

Our Capabilities

An Overview of Our Foundry’s Strength, Service, and Success

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