Drilling and Flow Calibrating Small Holes Down to One Micron in Diameter


Lenox Laser, Inc. drills and flow calibrates small holes from one micron in diameter to six thousand microns in diameter. After flow calibrating, these orifices have a flow diameter that can be used with simple fomulae to accurately predict flow rates through them for any gas or mixture of gases under various pressure and temperature conditions. The shape of the hole has no bearing on the flow diameter thus has no negative bearing on the degree of flow control accuracy.

Flow calibrated holes have found many customer uses over the last thirteen years. They have replaced many other flow control and measuring devices used by industry. They have proven to be less costly, trouble-free and more accurate in almost all cases. These holes are drilled into many different parts and materials, such as, VCR blind gaskets, tubes with a closed end, closed pipe nipples, set screws, and many other custom shapes. The majority of holes that are drilled are in stainless steel, however, many other materials, such as, plastic, glass, and most metals are also in demand.

Let Lenox Laser help you solve your flow control and other flow related problems in an economical and precise way. For more information and technical support call 410-592-3106 or visit our website at http://www.lenoxlaser.com/

Small Hole Applications


The small hole, orifice or aperture is the key element of any device or instrument designed to control or measure the flow rate of a gas or liquid. In the recent past, the gasoline piston engine went through a transition that improved performance and reliability. Precision made small holes brought to life the fuel-injection process, an important technology that has superseded the carburetor. For general applications, precision, fixed control of gas flow rate is made possible through placement of a small hole in the flow passage. Under fixed positive pressure conditions, the small hole becomes the flow rate calibration device. In the area of high vacuum helium leak detector calibration devices, the small holes provides the calibrated leak rate.

Semiconductor Integrated circuits and other semiconductor devices are the foundation of today’s electronics industry. The development and production of semiconductor devices and manufacturing equipment bases heavily on ion or molecular beam processing technology. Ion beam drilling devices require the use of small, precise holes for beam forming.

Optical from early days, optics used small holes to illustrate the wave property of light. An annular diffraction pattern of interference fringes may be observed from the passage of light through a small hole. Small holes provide important functions in optical transfer assemblies. They provide the means for beam alignment, spatial filtering, aperture limiting, image analysis, and image processing.

Electron Beam, a mask containing an array of small holes, is used to control the electron beam emission in the color television picture tube. The electron microscope uses apertures as small as 2 microns in diameter to maximize control of electron beam emissions and profiling.

Bob Gidner Designs flow for World Trade Center Fountain


Lenox Laser’s Bob Gidner, senior Flow Engineer designed and built a doughnut orifice nozzle for the World Trade Center fountain in New York City back in the 1970’s. The 16 foot circular nozzle would displace a flat sheet of water over the fountain. Then the water would ripple down on a 100 foot circular piece of granite. Over 12,000 gallons per minute would flow evenly out of the stainless steel doughnut shaped nozzle. Bob managed an entire division which helped build the nozzle at Zurn Industries Inc.

Bob has a scale model of the Towers and the fountain for the memory of all of the hard work that he contributed into making such a beautiful fountain. The towers were crafted by the Danbury Mint.

On September 11th, 2001 the fountain received a gash on one of its sides but it still remained structurally stable. The sculpture has been placed as a memorial in Battery Park directly adjacent to Hope Garden and the New York Harbor.