Growing a passion into one that makes money isn't rare. One of the optical engineers I work with is a master brewer at a local brewpub, working on recipes eveni

Growing a passion into one that makes money isn't rare. One of the optical engineers I work with is a master brewer at a local brewpub, working on recipes evenings and weekends, after decades of home-brewing. He does his side gig because he wanted to go bigger, meet more experienced people and try new things.