How to Use Cartridge Hammers
Where you have a lot of fixing to do, such as extensive battening for putting up cladding, a cartridge hammer can be hired to speed up the work. The hammer is a type of gun which fires a hardened steel stud or pin into a surface, using a cartridge similar to that used in a .22 rifle.
Many types of stud are made. Most have a plain flat head, like a nail, or have a threaded stem for removable fixings, the stud base remaining in position.
The penetration of the stud is governed by the material into which it is fired, the weight of the stud and the power of the cartridge.
A cartridge gun should never be used on brittle materials, such as aggregate, lath and plaster, fibre board and similar soft materials. Studs must not be driven within 50mm of the edge of brickwork, or this may break away.
Properly handled, a cartridge hammer is safe and efficient, but make sure that you are familiar with how it works; that you use the correct strength of cartridge (these are colour coded in order of power); and ensure that no one is in the line of fire.
As a rule, you should not fire a stud into a surface of less ‘stopping power’ than 230mm brickwork if there is a possibility of anyone beyond. Hold the gun firmly and squarely to the work to prevent ricochet.
A typical make of hammer is fired by a blow from an ordinary hand hammer on to a firing plunger on the base of the hammer. This fires the cartridge and propels the stud into the surface. With this type of hammer, firing through soft materials is virtually impossible.
10. November 2011 by admin
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