<p>Robert Knox of Whitefish in his home studio, where he built the prototype of his Cork Coffee Mug. (Brenda Ahearn/Daily Inter Lake)</p>
July 19, 2014
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July 19, 2014 9 p.m.
Put cork on that cup: Craftsman's custom mug gets boost from Kickstarter
Robert Knox says he has been living on coffee for the past 40 days.