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Over the years, I have been able to replicate this process to some extent in an experiment that I built. It flew onboard one of the 1993 Space Shuttle missions. It was part of the GAS (Get Away Special) program. That's where you rent space in a 55-gallon drum for your project. The first thing I did was melt alloys together, and when you spin them in a weightless environment you can create any type of dimension you want, because I figured out a way to control this. There was always a question about how you shape liquid metals in a weightless environment. It's a containerless process. It's a real phenomenon.
Robert: You made a form without using a mould?
David: Right. I figured out how to take a fluid glob floating in this weightless environment and control it. For every geometric shape and dimension, we know there is a corresponding sound wave.