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Old 08-06-14 | 08:38 AM
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stevnim
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Joined: May 2008
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From: St Louis Park, MN

Bikes: 2009 Surly Long Haul Trucker & 2014 Brompton M6R

Thank you for asking this question! I had never thought about tube manufacture before, went looking on YouTube and found this. It's not the best quality video, but you get the general idea. https://www.youtube.com/watch?v=X4cQ-R6ysmw
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