On Fri, 23 Apr 2004 13:55:34 -0400, Danny Boy wrote:

On 23 Apr 2004 15:55:48 GMT, Dave Hinz wrote:

Specific gravity measures density, not hardness. The metal mercury has
a very high specific density, yet is not hard. Not sure these two have
much if any correlation.

Hardness, like whether solid or liquid, relies on bond strength
[atomic, not fibres], not amount per unit volume.

I heard of ironwood, lignum vitae, but not the other exotic woods
listed by Doug. Didn't LV used to be used for ball bearings in old
steam paddle boats?

Dan.


sleeve bearings, not ball bearings.