I recently got a walking tour of a plant that manufactures truck radiators. One machine that particularly fascinated me was taking thin narrow sheet brass from rolls and forming it into oval tubes for use in the radiator core. The machine would form the tubes, solder the seam and spit out a contiuous length of tubing until the roll of material ran out. Of course, hundreds of feet of tubing are useless for radiators so the machine would cut it to a specified length and this got me to thinking (uh-oh). How does the machine cut the thin wall tubing without collapsing it? The cut ends show no burrs and are still perfectly shaped.
18 years ago