On 9-Jul-2005, "Upscale" wrote:

Only think I can think of is a roller ball with a steel
ball, not rubber.
http://www.leevalley.com/wood/page.a...at=1,240,41060

Yah, I've seen those. I could make those work if the wheels
were rubber. It has to travel across textured ceramic tile
so steel is out.

again thanks for the effort
ml