[Bill Hammack], aka the [EngineerGuy] is at it again, this time explaining how retractable ballpoint pens work. In this excellent video, he describes the simple (but remarkably sophisticated) ...
Tyler Thompson, 27, in the shed behind his Brunswick, Md., house. It is where he mixes ink for the company he started in 2012, Organic Studio. His colorful creations are popular with fountain pen ...
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