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Tool Talk Discussion Forum

A tool better than a carbon arc....

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Author 
NC Wayne

10-14-2004 21:29:20




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Hye guys I just saw the posts below talking about using a carbon arc to burn out boom pins. That's about as bad as using a torch... fortunately there is an easier way.....Next time you go to your welding supply house ask them about a Slice Torch, or an Exothermic cutter. Like one post below said, it just depends on where you are as to what they are called, both are the same thing. Arc-Air makes the holder for the rods for somewhere in I believe the $200 range. The rods come in various lengths and you can get them either flux coated or bare depending on your cutting situation. If your doing something small, are making a deep cut, and have it hooked to your welder then the covered is good to have since it keeps the rod from arcing off the side of ther hole. For the bigger pins, etc the plain rods work just fine. All you need to run one is the holder, a decent sized bottle of oxygen and a striker plate hooked to a battery to initiate the burn. You can hook it up to a welder and doing it that way you get a little more power out of it and you use the welding current to start the burn. Once you start the oxygen flow and initate the burn all you do is slowely feed the rod into the side of the pin and watch the metal run out the hole. In no time you'll have a nice hole all the way through without all the mess and hot flying metal of either the torch or gouging rod. They work the best in the horizontal position or the vertical overhead position where the molten metal can simply flow out, but they also do a good job going vertically down into a hole. The only thing there is you do get some blowback but even that can be controlled somewhat by varying the oxygen flow. Dad and I work on heavy equipment and we've had ours for going on 6 years now. It has been an invaluable tool for us bcause it always comes through when nothing else will. These rods will cut steel, cast iron, and anything in between. In fact they will also cut glass and concrete if your so inclined. The one drawback is the rods are a little on the expensive side for your average, everyday kind of cutting, but when you gotta have one cost is no object, and it usually saves more in time than the cost of labor to do the job any other way.

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