WATER JET CUTTING VS. LASER CUTTING & OTHER METAL CUTTING SERVICES

When it comes to cutting metal, there are plenty of ways to get the job done. But when it comes to high-tech, accurate cutting, two of the most popular options are water jet cutting and laser cutting.

They’re lean, they’re mean, and they look cool in action.

So in the battle between the water jet cutter vs laser cutter, which method do you prefer? Both are great options, but like most things in manufacturing, each has its own strengths and weaknesses.

Here’s a closer look at the attributes that set these two technologies apart as well as some other metal cutting technologies that you may want to consider:

WATER JET CUTTING VS LASER CUTTING: A FULL BREAKDOWN

Important factors to weigh when considering a water jet cutter vs laser cutter include:

Tooling & component costs

Operating costs

Machine costs

Waste

Versatility

Speed

Accuracy

Intangibles like noise and safety (if you’re handling it in-house)

Here’s a more in-depth look at each:

1. Tooling & Component Costs

Laser cutting: If you’re looking for inexpensive tooling, the laser cutter certainly works. Why? With a laser driven machine, there is no tooling -- you just program the cutting path and step aside. Even the laser – the key component – is inexpensive thanks to increased demand of such products.

It’s said that the most expensive aspect of running a laser cutter – other than the up-front cost of purchasing the equipment – is the power needed to operate the machine. If you’re outsourcing your cutting, expect this to factor into the vendor’s operating costs. A nice trade-off to this expense is that a laser tube itself lasts about 2 years.

After that, it can be refurbished for about $3,000 - $5,000. A new tube, depending on type will cost you about $7,000.

Water jet cutting: This tends to be pricier due to component wear and consumables. In addition to a water pump that needs periodic maintenance, you’ll need nozzles, seals, cutting water, cooling water, and an abrasive medium to run with the water in the machine.

Fortunately, a water jet cutter doesn’t require tooling, just someone to program in a cutting path in the CNC.

2. Operating costs

There’s also a gap between operating costs when it comes to the water jet cutter vs laser cutter debate.

Laser cutters: Cost anywhere from $13-$20 per hour to run.

Water jet cutters: Have a general range of $15-$30 per hour.

Overall, the operating costs are fairly similar, and the total cost will depend on your project.

3. Machine Costs

If you’re outsourcing your metal cutting services (which in many cases we recommend), you can skip this one. If not, read on.

One advantage that water cutters have over laser cutters is a lower up-front machine cost. This makes it important for users to weigh whether or not they’ll recoup the cost of investment over time by selecting a laser cutter over a water jet cutter.

4. Wastewater jet cutting vs metal cutting scrap waste

One often overlooked aspect of cutting is the cleanup.

Laser cutters: Aside from a little bit of dust, there’s really no mess made by the laser cutting process.

Water jet cutters: These involve a more extensive cleanup.

5. Speed

Speed is one category that really separates laser cutters and water jet cutters.

Laser cutters: You can typically cut more productively using a laser. In fact, some laser cutters can cut up to 70” of material per minute.

Water jet cutters: These usually can’t cut more than 20” per minute.

6. Accuracy

Laser cutters: These can cut as precisely as +/- 0.005 inches. You can get solid accuracy with both methods, but the edge here goes to laser cutting.

Water jet cutters: This method makes your cut within +/- 0.02 inches (note there’s one less 0 there).

7. Versatility

Laser cutters: These are somewhat limited in what they can cut, although the technology has improved in recent years. You can’t, though, cut something like marble.

However, you can cut metals, plastics, and even fabrics, but you’re limited in the thickness of the metal you can cut. That may depend on the wattage of your vendor’s (or your own) machine.

Water jet cutters: These are very flexible machines, as they can cut just about any material. They can go deeper than laser, depending the water pressure and the abrasives used in the jet.

8. Intangibles

Laser cutting: It’s quiet and safe!

Water jet cutting: The process produces a lot of noise and generally is perceived as more dangerous. Best let a specialized expert handle it for you.

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