Aluminum Bike Frame Repair: 6000 Series Aluminum Welding



We received a project to repair off an Aluminum competition mountain bike. There were significant cracks in the swing arm that needed to be diagnosed and welded. Since this is an old bike frame (about 12 years old), there was no available information about the parent material. We decided that it was likely a 6000 series Aluminum and would be best repaired with a 5356 Aluminum filler.

Before welding, we first needed to remove all the paint / primer and groove out the cracks.


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