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O/A welding question

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asport22

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I get a lot more scale than I think I should when I weld, especially on the back side. Which creates more scale - using the smallest tip that will melt the metal, or the biggest one that doesn't make holes?

Also, I've got an old "Oxy-Acetylene Handbook" by Linde from 1943. In the chapter on procedure control, which is largely pointed at aircraft welding, there are a couple of paragraphs on "scale welding", with "scale" referring not to size or to the black crispy stuff but to a weld having sort of a stack-of-dimes look. It is supposed to be good for small or thin parts that are particularly susceptible to distortion. Has anyone heard of this?

Warren
 

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