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"Sometimes your client has to learn by "doing", no amount of free advice will deter them. After they spend a few thousand dollars the light will come on and they will seek your council on the matter. "- quote
Funny how that works, isn't it Al?
Been there done that too....I had a small fabricator who had guys couldn't pass a GMAW welder 1" plate qualification test, even after they called and asked my opinion about chipping the silicon islands for each pass, they continued with the practice of trying to float them out with subsequent passes. After many attempts, they went back to chipping those little silicon islands out on every pass, and they were simply amazed that they were now passing these qualification tests.