Thickness of box and round frame tube.

[JakeDW]

I am on the last stretch of building my truck after I get it on the road and enjoy it for a bit I want to build a complete chassis for it while its in use.

I have always used 3/16 square/rectangle tube or 1 1/4 round tube.

I want to be able to bend the round tube.

So my question to build a complete frame how thick of material should be used.

I want the main chassis to be rectangular tube and k member ect to be round.

Thanks Jake