Many years ago, I sent Indian George a box full of thin wall stainless tubing in 3" and 4" size. I cut it all 3" long. He was experimenting with some patterns and such that he thought would work best in a round canister. I never heard how it went, and IG can't tell us now.
What I recall was -
He was ordering a bunch of 16-gauge round plates to fit the tubes and was going to weld them in the ends. The idea was to stack the metal and powder in them vertically and then compress them around 50% from the ends to get a squished pattern, then work the "puck" from the sides to cause curved disruptions on a different axis.
Don't know what came of the plan.