Thanks for the replies.

I've lost track of the dirt trackers I used to know, but have been asking around. So far, no luck.

I tried once before to bend some .120 wall tubing on a muffler machine and it kinked in the bend. It may have been the machine or the operator. I don't know. Filling it with sand would most likely prevent this.

I do have a HF pipe bender. The sand trick might work with it, too, but since the dies are made for pipe and not tubing, the tube would most likely be scarred pretty bad.

Worst comes to worst, I'll jig it up on the table, fill it with sand and heat it with a torch. Probably take a lot of acetylene and oxygen, but it will work. This is a technique I've used on other projects for smaller tube. You can even make super tight bends like this, but it takes absolutely bone dry sand.

Considering it's intended use, I would rather not use heat, but that may be the only way for me to get it done. It is mild steel after all and shouldn't be effected much by heat.