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Authors - Dr. John H. Olsen
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Articles written by Dr. John H. Olsen


Dr. John H. Olsen

Dr. John H. Olsen

Contributing Writer
OMAX Corp.

21409 72nd Ave. S.
Kent, WA 98032
phone: 253-872-2300

Results: 26

Etching 3-D images with an abrasive waterjet

Currently used primarily in art and architecture, waterjet etching is beginning to make inroads into machining and fabricating shops. The textured gripper pictured in this article is an example of a 3-D etched part.


2-D + 3-D = 5-axis waterjet cutting

Five-axis waterjet cutting is not something you see in every fabricating operation. But for some applications where tube or precise edge cutting might be required, it makes total sense.


The trend toward larger abrasive waterjet cutting tables

Once custom-produced on a one-off basis for specific applications, large abrasive waterjet cutting tables have become part of many standard systems, thanks mostly to advanced linear-drive technology that makes the machines more affordable.


Abrasive waterjets move into 3-D shapes, including pipe intersections

Used for many years to cut 2-D parts, abrasive waterjet technology has evolved into cutting complex 3-D shapes, including pipe intersections and saddles. Accessories and control software that make this possible can be retrofitted to existing systems.


A primer on waterjet accessories

For fabricators and metalworkers considering their first purchase of a waterjet, return on investment will be heavily influenced by features, options, and accessories that provide a match to their unique needs.Investigating and evaluating the latest alternatives will go a long way in boosting...


Waterjet bevel cutting made easy

Improvements in waterjet technology have made bevel cutting with these machines more suitable for a greater number of fabricating shops by simplifying programming and operation and reducing the need for trial-and-error setup.


Newer linear-drive technology improves waterjet accuracy, reduces costs

Recent developments in linear-drive technology are designed to improve waterjet cutting accuracy and safety, while making high-precision machines more affordable. Find out more about this traction-drive system that has its roots in railroad locomotives.


Green cutting with waterjets

Abrasive waterjets are powerful cutting tools. As is the case with all industrial machinery, waterjet machines have certain inherent hazards that go beyond the obvious cuts. Knowledge of these hazards and proper protective measures are necessary for safe operation. This article presents an...


Safety in jet cutting

Abrasive waterjets are powerful cutting tools. As is the case with all industrial machinery, waterjet machines have certain inherent hazards that go beyond the obvious cuts. Knowledge of these hazards and proper protective measures are necessary for safe operation. This article presents an...


Maximizing waterjet cutting profit

Achieving maximum profitability from your waterjet system requires knowing which operating methods are best-suited to your application. This article explores the costs associated with waterjet cutting and shows a method for maximizing the profit derived from the machine for various production...


Pumping up the waterjet power

Want to maximize your waterjet's performance? Among the options for doing so are adding horsepower to the pump, by either running at higher pressure, or using a larger or two nozzles. This article discusses the options and provides guidelines to help you decide what's best for your particular...


Jet cutting accessories

The right accessories can help you make the most of your waterjet cutting system and prolong system life. Among the accessories discussed in this article are garnet feeders, removers, and recyclers; abrasive agitators; taper management tools; optional nozzles; piercing accessories; standoff...


Recent developments in abrasive jet software

Software is an integral part of a waterjet cutting system. Advances in controller software compensate for common jet cutting errors, such as lag, striations, taper, and kerf; offer improvements in cutting functions; and reduce the time it takes to produce parts


Economic considerations when purchasing a jet cutting machine

Thinking about purchasing a jet cutting system? Many factors should be considered before deciding which system to buy. This article discusses fixed and operating costs and productivity and provides the framework for making an intelligent buying decision.


Machine components you can fabricate with an abrasive jet

Many machine components formerly made with conventional machining techniques now can be made easily and cost-effectively with abrasive waterjet cutting. This article discusses some of these components. It also gives examples of abrasive waterjet-produced signs and labels that can be used to...


What you need to know about high-pressure equipment

High-pressure abrasive and waterjet cutting systems have unique properties that must be understood to maximize performance and ensure safety. This article discusses the principles of water compressibility and pressurization, metal fatigue, high-pressure plumbing, seals, valves, and making and...


Fixturing for abrasive jet machining

Clamping the workpiece against sideways motion and weighting it against vertical motion will prevent part loss and improve part quality in waterjet machining. This article offers practical fixturing suggestions for both cutting from flat sheet and adding features to existing parts.


How one shop benefited from abrasive waterjet technology

Triplex Systems found that using abrasive waterjet cutting technology combined with a hole-and-tab technique to fabricate its products helped eliminate machining operations and reduced costs.


Abrasive Jet Mechanics


Designing for abrasive waterjet fabrication

Thinking ahead during the design stage of a fabrication always saves manufacturing costs later. This is also true for the parts cut with a precision waterjet. Part production time, assembly time, fixturing, and weld preparation time all can be saved. Even design time can be saved by following...


Improving waterjet cutting precision by eliminating taper


Pumps for abrasive jet cutting


Selecting a table for abrasive jet machining


Software for abrasive water jet machines

Software plays a key role in abrasive jet machining. Infact, it is only through software that precision abrasive jet machining truly is possible. Some of the most significant advancements in the industry have been in software.


H2Olsen: Buying an abrasive jet machine. Is the process right for you?

Abrasive waterjet cutting may or may not be right for your particular application; but, knowing all you can about the process and its pros and cons can help you make that decision better.


Not your father's abrasive jet

The advances made in abrasive jet cutting in recent years have negated much of the downside formerly associated with the technology.