On a related topic, here's a scary video of a tubing bender.[1] This is an example of something that's automated just enough to be out of human control, but not enough to be safely keep the operator out of the workspace. Note the operator being hit by the end of the tube at 00:45. If that job had called for more bend, he would have been impaled. OSHA lists 85 bending machine injuries, usually involving finger amputation.[2] Bending machines are unusually hazardous because the workpiece can move way outside the machine's own boundary.
Don't design stuff like that. Either put the process under continuous operator control, or get the operator clear of the moving parts.
[1] https://youtu.be/ocvx_gQJ0sI?t=41 [2] https://www.osha.gov/pls/imis/AccidentSearch.search?acc_keyw...
There's an active market in aftermarket frames, but they're usually welded. This thing is held together with hex head screws. Tighten before each ride.
Now if Fictiv wanted to make frames to order, they'd have a CNC tube [1] bender and a CNC tube welder.[2] A service which could make welded units out of tubing cheaply, accurately, and to order would be useful. Custom car, motorcycle, beach buggy, trailer, and go-cart jobs are often built from tube steel, so there's a market. Design your collection of tubes, and have the software figure out the bends and welds, telling you if you've designed something not buildable with the available equipment. There's software for that, not from Fictiv.[3] With a service like that available, others might find new applications for custom tube assemblies.
[1] https://www.youtube.com/watch?v=m99U7qejm2g [2] https://www.youtube.com/watch?v=tRuqb6wquig [3] http://www.bend-tech.com/product_infos/bt_pro.html