DIYbanter - View Single Post - Cutting torch use question

Lloyd E. Sponenburgh[_3_]

fired this volley in news:722a319c-4cba-4a7b-9984-
:

slag flowing behind
the tip and into the kerf.

Increase your O2 pressure, and be sure the tip is very clean and well-
reamed to provide a solid jet of oxygen. The molten metal should be
blown clear of the kerf.

You may also be using too small a tip for the thickness of work. As the
work size increases, the kerf must be wider.

Third, I find that tilting the torch slightly backwards so the jet cuts
further ahead deeper in the work will help clear the kerf. Running dead-
vertical or dragging will tend to blow the melt back into the cut.

Cutting anything thicker than a couple of inches is always tougher than
thin work.

LLoyd