Why is Waterjet Cutting Popular Among Manufacturers?

By  //  September 8, 2023

Waterjet cutting has carved its niche in the world of manufacturing. But what’s behind its growing popularity? Dive in as we dissect its mechanics, benefits, and its esteemed position in various industries.

Waterjet cutting, an advanced technological marvel, has revolutionized the manufacturing industry in more ways than one can imagine. With its incredible versatility and precision, it’s no surprise that its demand has skyrocketed. Let’s explore what waterjet cutting is and its remarkable attributes.

What exactly is waterjet cutting?

Waterjet cutting is a manufacturing process that uses a high-pressure stream of water, often mixed with abrasive materials, to cut a wide array of materials. It stands out due to its cold cutting nature, ensuring the material isn’t affected by heat.

How does waterjet cutting work?

The process of waterjet cutting is fascinating. Here are the key stages:

Pressurization: Water is pressurized up to 60,000 psi.

Abrasive Mixing: For harder materials, the water is mixed with abrasives like garnet.

Ejection: This mixture is then ejected from a nozzle at high speeds.

Cutting: The force of this stream cuts through the material cleanly.

What are the core components of a waterjet cutting system?

A waterjet cutting machine is intricate. Key parts include:

High-pressure pump: Generates the necessary water pressure.

Abrasive hopper: Stores the abrasive used in the process.

Cutting head: Where the water is ejected.

Catcher tank: Collects waste water and debris.

What materials can be cut using waterjet technology?

Waterjet cutting boasts remarkable adaptability when it comes to the types of materials it can handle. Its versatility is one of its most applauded attributes.

Metals and Alloys

These are among the most commonly cut materials, including aluminum, steel, and brass. Their malleability makes them ideal candidates for waterjet cutting.


While fragile, ceramics can be precisely cut with a waterjet without risk of breakage.

Stone and Granite

These hard materials are cleanly sliced, making them suitable for detailed artwork and construction.


Despite its brittleness, glass can be cut intricately with waterjets, especially for decorative purposes.

Rubber and Polymers

These flexible materials are efficiently cut into desired shapes without any burn marks.


From hardwoods to plywoods, waterjets provide a smooth finish.


These can range from carbon fiber to fiberglass, and waterjets ensure they don’t fray.


Waterjets can effortlessly slice through various foam densities.

What are the limitations of materials for waterjet cutting?

Though adaptable, the thickest material a waterjet can cut is around 8 inches (203.2mm), while the hardest can be materials like titanium.

Why do manufacturers prefer waterjet cutting over other methods?

The reasons are manifold:

Minimal heat-affected zone: No heat means no material warping.

Environmentally friendly: No harmful gases or residues.

Versatility in materials: From rubber to granite, its range is vast.

No need for secondary finishing: Clean cuts reduce additional work.

How does waterjet cutting compare to laser cutting?

Both have their merits. Yet, they serve different purposes.

Advantages of waterjet cutting over laser

Can cut thicker materials.

No heat-induced side effects.

Works on reflective materials.

Limitations of waterjet cutting compared to laser

Slower than laser for some materials.

Consumes more energy.

Requires more water resources.

What are the precision and accuracy parameters of waterjet cutting?

Precision is paramount. Here are some parameters:

Kerf width: Approximately 0.02” (0.5mm).

Dimensional tolerance: +/- 0.005” (0.127mm).

Positioning tolerance: +/- 0.001” (0.025mm).

How do abrasive materials affect the precision of waterjet cutting?

Abrasives like garnet enhance precision, especially for harder materials. They ensure a cleaner and sharper cut.

What are the operational costs associated with waterjet cutting?

How much does a waterjet cutting system cost?

Prices vary, but on average, they can range from $50,000 to $300,000, depending on specifications.

What are the maintenance costs for waterjet systems?

Maintaining a waterjet system involves costs like nozzle replacements (about $200 each), pump maintenance (around $1,000 annually), and abrasive material costs which can run up to $400/ton.

How safe is waterjet cutting?

Waterjets are relatively safe. However, operators must wear protective gear, avoid placing hands near the cutting area, and regularly inspect equipment for potential malfunctions.

How is waterjet cutting employed across different industries?

From automotive to art, waterjet cutting’s applications are vast:

Automotive: For cutting car components.

Aerospace: For crafting lightweight aircraft parts.

Art: Detailed sculptures and intricate designs.

What are design considerations when using waterjet cutting?

Designing for waterjet involves:

Material selection: Ensure compatibility.

Cutting speed: Adjust based on material.

Nozzle distance: Maintain an optimal gap from the material.

Common mistakes include not factoring in the kerf width or neglecting the material’s inherent properties.

How to optimize the waterjet cutting process?


Optimization tips include:

Regularly inspecting the nozzle for wear.

Calibrating water pressure.

Using optimal abrasive quantities.

What are alternative technologies and processes to waterjet cutting?

Alternatives include:

CNC Laser cutting: Best for thinner materials.

Plasma cutting: Suitable for conductive materials.

Mechanical cutting: Traditional methods using blades.

While each has its merits, waterjet cutting often stands out for its versatility.


In the vast realm of manufacturing, waterjet cutting shines brightly, offering unparalleled versatility, precision, and adaptability. As industries continue to evolve, one can only anticipate its further integration into newer realms, solidifying its indispensable status in manufacturing.