On Tue, 04 Sep 2007 22:57:31 GMT, Dev Null wrote:

I have a widget that has some tubes coming out. Tubes are hard copper
~1/2-inch O.D. actual. I want to attach plastic tubing to the copper
tubes. I would like to create beads in the copper tube. Copper tube
can not be removed from widget.

Can anyone suggest a method to create a bead or an alternative?

TIA

there is a little tool to do just this. it is basically three balls
like a ball bearing component in a cross drilling through a hollow
tube.
a conical part is pulled into the tube to force the balls out of the
holes in the tube.
you basically nut it up tight then rotate the entire tool. as you pull
the cone up tighter the balls press out and raise the metal more.

the other alternative is to solder a ring of copper wire in place.

Stealth Pilot