Quote:
Originally Posted by 114ManualLabor
Ew, C channel. We use 1x1 box extrusion. It's been plenty strong, easy to weld, and nice and cheap/available.
Why C channel?
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We have used C channel for a couple of reasons.
Two 1x1 box extrusions used on the side of a frame is heavier than a 4x1 C channel.
We have had good results bolting together a C channel frame and do not have the ability to weld aluminum.