Looks like you are all having lots of fun!
The shape I see now (November 20, 2018, 11:16) is a helix with a constant ~6d bend radius and ~2d advance.
No need for a 3D print to convey to the bending shop what you want. This shape is very common.
Solidworks can quickly generate a print drawing with flat and isometric views and dimensions to convey all the info the shop needs.
Seamless tubing is the only thing that will work. You've referred to "pipe" in all of your previous posts. That will not bend well.
The bend radius you are using is 6d, where "d" is the outside diameter of the tube.
That is a minimum for successful bends in the best of tubing, at the best of times.
Heat does not always help, because it cannot be evenly applied without an oven.
A helix like that needs a "lead-in" on each end, which will be straight, at least 6d long. Cut off the lead-ins when fitting it up later.