preheat pressure/volume is set with the valve under or to the side of the cutting oxy handle, cutting oxygen is full force straight thru the torch. the main oxy valve at the hose on the handle should be wide open.
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Irnsrgn
Knowledge must be shared or it lies dead in the mind.
The Blacksmith must use Hammer and Flame to force the iron down the path of his own choosing.
I usually find it much easier to be wrong once in while than to try to be perfect.
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