So, after blowing some IC piping apart I started looking into options for putting a bead on all of the pipes. A friend had sent me an link on how to make a tube crimper out of some vise grips, a washer, and an exhaust clamp several months ago. So, I went ahead and made one.
What I started with after grinding down the vise grips a bit.
Cheep HF 90deg clamp for fixturing.
I braze-welded everything together to avoid burning off the zinc plating on stuff and inhaling those toxic fumes.
Instead of what most of the articles suggested, welding the washer directly to the vise grips, I brazed two nuts onto the vise grips, so I can use different size washer for different tubes, or make adjustments if I need to.
To use the crimper I put the vise grips in a bench vise so I could focus on manipulating the tube with one hand and operating the crimper with my other hand. I could do a bead in <1min after a practice run or two. I always kept the outside edge of the tube even with the exhaust clamp, this ensured that the start and end of a bead lined up.
The particular exhaust clamp I used didn't allow me to make very tall beads, but it still worked pretty well. The beads are nice and smooth and very uniform if you take small steps around the tube.
I uninstalled, crimped, and then reinstalled the 3 cold-side pipes in 20 minutes or so, very useful tool to make. Hopefully no more blown apart IC piping.