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Old 19th February 2015, 01:08 PM   #7
fernando
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Join Date: Dec 2004
Location: Portugal
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Thank you for your input, Ken.
I have also made a brief research on electric welding; in fact the more recent development took place in 1907, that one using coated electrodes, a system so much ( the most ?) popularized.
However, if you allow me, the (my) point is not the intervention in this cannon having being made in either end 19th or beginning 20th century, but some five centuries after this example was born, realizing that still someone had all that work to shoot this relic with such required efficiency... just the 'other day'.
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