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1 year agoAnnouncement: New Video Series, new book, and an Event!engineerguy Bill Hammack Archive Channel
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1 year agoA short announcement about EngineerGuy videos (August 2017)engineerguy Bill Hammack Archive Channel
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7 months agoEarly color photo with no dyes #shorts #engineerguy #engineering #photography #illinois #inventionengineerguy Bill Hammack Archive Channel