BUG-O Systems Flame Cutting - Manual (Page 32)

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2. This section is very bad. (a) Very high preheat
has melted and rolled the top edge. (b) Travel
speed was too slow causing gouges and slag
sticks to the bottom of the cut.
3. This section is slightly cupped just below the
top edge because of excess oxygen pressure.
The slight beading along the top edge
indicated that a little too much preheat was
used.
Flame Cutting Handbook.p65 5/9/2007, 8:06 AM 32