Hi Greg, thanks for the nice words.
The titanium rod is 6AL-4V .125" stuff. I had a couple of 5 foot pieces sitting in the corner of the basement war room, and I used one of those. A couple of years ago, Brendan Swihart over in Fruita was selling some tubular aluminum pack stays. I copied his bends with my titanium rod. I just bent it with a table top jig (it looks like a cribbage board, but with a steel base and carbide pegs), and I fine-tuned it by forcefully bending it over my knee. No heat treatment is necessary, but .125" ti rod is a bit of a bitch to bend by hand. Probably heating it would help, but I don't have a decent setup to do that. Oh, my source for the rod was probably through Titanium Joe. I bought a bunch of it when I first made the Stix, but then I outsourced the bending and I had some of the rod left over.
Actually, the titanium frame doesn't help a whole lot with this particular pack, since the carry load is just 11-13#. But it does prevent the empty pack from collapsing to the ground when I'm loading it up. But when I used one of Brendan's aluminum stays with my modified Jam pack, it made all the difference in the world. Before the mod, any weight over 20# was definitely uncomfortable to me. But with the mods, I can easily carry 25-27# without issue. I'll try to get the link to that mod thread, but I'll do it in another post (I don't trust this system to not delete everything I just typed).
Edit-- I forgot to tell you that I sewed a little pocket into the waist belt where it connects to the pack. I also sewed a few thin black & white loops to the pack to further support the frame rod. These serve mainly to pull the body of the pack closer to the frame, and therefore to my body. On the Jam, I made a pocket out of 1/2" tubular webbing, which I sewed to the seam where the hip belt connects to the pack. All of my seams are placed into the existing seams of the pack, for greater strength. Now, I'm off to find that Jam link.