Although waterjet cutting may appear more expensive in terms of initial and operational costs compared to other traditional methods, it is undoubtedly a worthwhile investment in the long run. This industrial cutting process utilizes a high-pressure stream of water or a water-abrasive slurry to cut through various materials with extreme precision, without generating heat or damaging the material’s integrity. Its efficiency is demonstrated through several benefits, such as the absence of heat-affected zones, the ability to cut multiple parts at once, minimal need for secondary processing, and its recyclable feature. While the hourly cost may seem higher, waterjet cutting proves more efficient due to its precision, versatility in application, and reduced after-processing requirements. Waterjet machines excel in various applications, making them a valuable investment for those seeking accurate and fast-cutting tools.
Is Waterjet Cutting Expensive?
Many believe that waterjet cutting is expensive, but if you look closely at its applications, it’s one of the most cost-effective cutting methods. Although the hourly operating cost of a waterjet machine seems higher than other techniques, this perception is incorrect. Waterjet cutting is a non-contact, cold-cutting process that doesn’t use heat, meaning it doesn’t compromise material quality. Another advantage is the ability to stack materials and cut multiple layers at once, a method not possible with traditional techniques. All these factors combined make waterjet cutting both efficient and affordable.
Is Waterjet Cutting Cheaper Than Laser Cutting?
While waterjet cutting has a lower initial cost compared to laser cutting, its hourly operational cost is slightly higher, typically ranging from $13 to $20 per hour. In comparison, laser cutting costs between $15 and $30 per hour. Although this difference may seem small, it increases significantly with larger projects. Waterjet cutting becomes more cost-effective in the long run, particularly for thicker or heat-sensitive materials. Waterjets do require more consumables but don’t have the complex tooling requirements of laser cutters, making them a better choice for thicker materials. 
Factors Influencing Waterjet Cutting Operating Costs
Several factors affect waterjet cutting costs, including:
- Water consumption: Water costs are relatively low, and most of it is reclaimed during the process.
- Electricity consumption: Power costs depend on machine type and local electricity rates, with annual expenses ranging from $3,000 to $9,000.
- Wear and tear: Components like nozzles and pump seals wear out over time and need regular replacement.
- Abrasive costs: Garnet sand, a common abrasive, is one of the most expensive consumables, costing around $0.25 per pound.
Hourly Costs of Running an Abrasive Waterjet
Waterjet cutting hourly costs typically range from $12 to $30, depending on factors such as material type and cutting density. Other costs to consider include abrasives, electricity, and equipment maintenance.
| Cost Component | Minimum Estimate | Maximum Estimate |
|---|---|---|
| Abrasive Material Cost | $8 per hour | $20 per hour |
| Water Usage | Negligible | Negligible |
| Electricity Usage | $3 per hour | $9 per hour |
| Parts Wear and Tear | $1 per hour | $4 per hour |
| Maintenance and Downtime | $0.50 per hour | $2 per hour |
Waterjet Cutting Cost Per Inch
The cost per inch of waterjet cutting depends on material type, part size, and the characteristics of the cutting system. For example, cutting 1.2-inch thick titanium with a 75 HP pump and 60,000 PSI cutting pressure would cost approximately $0.21 per inch, with an estimated cost of $1.20 per minute.
How to Calculate Costs for Your Waterjet Cutting Project?
Key factors to consider when calculating waterjet cutting costs include material type, thickness, and final cut dimensions. Although waterjet cutting has a higher hourly rate compared to plasma or laser cutting, its accuracy and speed often lead to lower overall project costs.
Fixed vs. Variable Cost Drivers in Waterjet Cutting Systems
Cost drivers include equipment purchase or lease, abrasive consumption, water usage, power consumption, and labor costs.
| Cost Factor | Description | Explanation | Impact |
|---|---|---|---|
| Machine Purchase or Rental | Initial investment for equipment | One-time cost for acquiring the machine | High initial investment |
| Depreciation | Gradual reduction in machine value | Calculated using standard depreciation models | Affects long-term financial planning |
| Abrasive Consumption | Cost of abrasive materials | 0.5 to 1.5 pounds per minute; varies by material | Directly influences hourly expenses |
| Water Usage | Water used during cutting process | Increases with higher cutting pressures (50,000 – 90,000 PSI) | Depends on material thickness and cutting speed |
| Energy Usage | Power required for machine operation | Depends on machine specifications and usage frequency | Impacts operational costs based on usage |
| Labor Costs | Operator wages and benefits | Varies depending on project complexity and scale | Increases with larger and more complex operations |
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Conclusion
While the hourly rate for waterjet cutting may be higher than other methods, its precision, speed, and versatility across various materials make it a more competitive option overall. If you’d like more information on waterjet cutting services, feel free to contact us.
Disclaimer
The content appearing on this webpage is for informational purposes only. LongSheng makes no representation or warranty of any kind, be it expressed or implied, as to the accuracy, completeness, or validity of the information. Any performance parameters, geometric tolerances, specific design features, quality and types of materials, or processes should not be inferred to represent what will be delivered by third-party suppliers or manufacturers through LongSheng’s network. Buyers seeking quotes for parts are responsible for defining the specific requirements for those parts. Please contact to our for more information.
Team LongSheng
This article was written by various LongSheng contributors. LongSheng is a leading resource on manufacturing with CNC machining, sheet metal fabrication, 3D printing, injection molding,metal stamping and more.
