Hello, I have an application that I can't easily find U-bolts of specific dimensions for and it isn't worth it ordering custom made ones. The u-bolts are intended to fasten square tubes -alu or steel profiles- to form a frame that should be sturdy enough to take some weight, vibrations, etc. Nothing extraordinary. I am thinking a cardboard/vinyl cutter frame. I don't have ALU profiles to use so I have to rely on either ALU square tube or Steel square tube. This is for a side project so I don't want to buy brackets/etc. Tubes, (U-)Bolts, Nuts. Here below you can see what I am talking about: Can you please tell me if using threaded rod would be acceptable to bend (hot bend not cold) in a u-bolt shape (around another round object so I can achieve the radius I need)? Do I need to treat the newly shaped piece of threaded rod to have it hardened somehow? The design above prevents to any member all degrees of freedom, be it rotational or translation. Thanks.