It is important to remember that relatively few tools break as a result of material or workmanship defects.

A defective tool is likely to fail immediately due to the severe stresses imparted by the heavy, repetitive blows of the hammer. A tool which breaks after considerable service, evidenced by a well worn shank and blade, is not likely to be defective but would fall into one of the categories noted at the bottom of the page.

To prolong tool life and ensure safe use of the product, here are a few guidelines to follow.

Fatigue Failure
A thumbnail crack develops from prying or the use of dull loads.

Intense heat is generated when penetration is not achieved by the workend. The folding over is the result of that heat softened condition.

Resharpening Failure
This usually occurs 3" to 5" from the workend due to improper heating during resharpening. The coarse lines show the absence of hardness after resharpening.

Tools showing considerable wear lose their cutting efficiency, transferring strain onto the shank, body and blade, resulting in breakage.


Do not use tools for unintended purposes, i.e. using an asphalt cutter to break concrete.


Do not allow tools to overheat in service as it will draw the temper of the tool and cause the point or blade to soften and mushroom.


Do not run tools idle in the hammers. Tools are designed to dispense the shock of the hammer into the work; free running causes excessive build-up of stress in the tool itself and creates fatigue points.


Keep workends sharp and cutting efficiently. Have them sharpened or redressed on a regular basis by a qualified blacksmith.


Keep hammers properly maintained, regularly replacing worn bushings or pistons and lubricating parts.


Educate the user in the proper air or hydraulic pressure required during each phase of operation; avoid using full pressure to start operation, which causes the tool to plow into the work rather than cutting it.


Do not pry with any hand or power hammer accessory tool.


Use of in-line oilers and filters for proper lubricating during operation is encouraged.