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The Most Advanced Stress Relief on the Planet

The Company

Bonal Technologies, Inc. ( is a wholly-owned subsidiary of Bonal International Inc., both are headquartered in Royal Oak, Michigan, a suburb of Detroit. Bonal Technologies is the pioneer and world’s leading provider of Sub-Harmonic vibratory stress relief and weld conditioning for metal. 

Bonal manufactures a complete line of Meta-Lax stress relieving and weld conditioning equipment including CE Approved equipment.  Also, the company provides consulting and metal stress relief services to its customers. Meta-Lax equipment is sold in the automotive, aerospace, defense, shipbuilding, machine tool, mold making, die casting, EDM, high performance, mining, power generation, heat treating, and other industries.

The History

In the late 1960s August G. Hebel Jr. and A. George Hebel III of Bonal Corporation, developed the Sub-Harmonic technology that Meta-Lax utilizes. At the time, the Bonal Corporation was a planermill machine shop.

The Hebels found that all available vibratory stress relief equipment was only reliable from 40-50% of the time. These findings were very discouraging to other companies who had the same results. However, the Hebels did not give up on the concept all together. They researched and experimented with vibratory processing searching for a way to achieve 100% reliability.

The Hebels discovered that to get successful stress relief results when using vibrational energy two key principles must be followed: Sub-Harmonic energy must be used, and the harmonic curve of a stressed part would "shift" frequency from an unnatural frequency to its natural frequency as the part is relieved of stress.

Through several inventions, innovations, and patents, Bonal developed a process that would measure the harmonic curve and provide the 100% success rate that the Hebels originally envisioned. They named their Sub-Harmonic process "Meta-Lax:" (Metal Relaxation). Meta-Lax quickly became the leader in vibratory stress relief and provided industry with its first attractive alternative to heat-treat stress relief for widespread use.

Soon after, Meta-Lax technology brought about a new breakthrough for the fabrication industry. Through a specialized process called Meta-Lax Weld Conditioning welders were able to do something they could never do before: weld a part while inducing negligible stress. It was also found that Meta-Lax Weld Conditioning yielded several other benefits to welders and their products.

To manufacture and market Meta-Lax, a separate company, Bonal Technologies, Inc. was formed. Later it became a public company as a subsidiary of Bonal International.

Today Meta-Lax equipment is sold throughout the US and in 50 foreign countries through a network of national and international distributorships.

Major Accomplishments
The major accomplishments of Bonal Technologies, Inc. since becoming involved with the vibration stress relief technique are:
1. The development of the technology that could produce successful (effective and consistent) stress relief results in comparison to heat treat stress relief.
2. Receiving patents on its sub-harmonic vibratory stress relief process.
3. Seeing the Meta-Lax process written into manufacturing specifications by many major organizations including automotive companies, aerospace components manufacturers, and government defense branches.

Seeing Meta-Lax processed workpieces set new quality standards for accuracy and performance in almost every sector of the metalworking industry.

Other Bonal Products
Besides the standard Meta-Lax equipment line, Bonal manufactures two other product lines: Pulse Puddle Arc Welding (PPAW), designed exclusively for weld conditioning ( and Black Magic - The Ultimate Distortion Controller, to treat small parts that weigh less than 300lbs. (
Market Makers

Bonal International, Inc. is a publically owned and traded company. 
Its stock has the CUSIP number 097-770-200 and a trading symbol of “BONL.”  

The company’s market makers are:
Access Securites, Inc.
Domestic Securities, Inc.
E*Trade Capital Markets, LLC
Hill Thompson Magid & Co.
Hudson Securties, Inc.
Knight Equity Equity Markets, LP
UBS Securties, LCC
800 331-6171
201 782-0888
866 551-8300
201 434-6900
201 216-0100
201 222-9400
203 719-7100

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Bonal Technologies, Inc. 1300 North Campbell Road Royal Oak, MI 48067
P: 248-582-0900 or 800.638-2529 F: 248-582-0901