BOSTON — As a child, Bruce Sison was always disassembling things, much to his parents’ chagrin.  Commonly, a trail of parts n’ pieces for the VCR, toasters and flashlights could be found in his wake.  His parents eventually learned that they could spare household appliances by giving him toy cars and trucks to dissect. “Somehow, I just needed to see how things worked, and came apart,” chuckled Sison, owner of Walpole, Massachusetts,-based Sison ...

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