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This whistle fights fascists | How thousands of 3D-printed whistles are derailing ICE.
(www.theverge.com)
This is a most excellent place for technology news and articles.
I've never come across a whistle that isn't good enough, so I don't really understand
I've 3d printed a number of whistles that were not good enough. A few that did work at all. I really understand. I've saw the one in the picture on different sites but am satisfied with the one I chose.
I meant I've never come across one not good enough in store, sorry about the confusion. That is, Whistles bought seem fine.
Okay and I'm sure a bought one is. The 3d printed ones do just fine and they are cheap. Cheaper per unit in production than anything other than a huge order from china.