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Posted by: Bartlett 914 Jan 23 2007, 11:18 AM

Curious Idea. Using a projectile made of ice at high velocity to make precision welds. I don't know how they intend to accelerate the Ice Bullet. Sure would make installing the floor pans nice.

http://www.newscientisttech.com/article/dn11003-invention-

Posted by: fitsbain Jan 23 2007, 11:27 AM

I've actuall been to the facilities at OSU. Sounds like a development from the Edison Welding institute.

Sounds like this is a variation on "stir welding"

Check this link

http://en.wikipedia.org/wiki/Friction_stir_welding

Posted by: Bartlett 914 Jan 23 2007, 12:14 PM

I think this is how valves are welded to the valve shank. One piece is turns very fast (using a flywheel) and pressed hard against the other part. Friction heats up both parts and they weld themselves together. Dissimiliar metals can be welded this way.