On Thu, 4 Feb 2010 20:34:09 -0800, "Bill Noble"
wrote:

I made a mount for my Nuvi using a standard ball bearing for the ball -
heated it up to remove some of the temper and drilled it and threaded it,
and then made a shaft to fit and appropriate mounting bracketry to hold it
where I wanted it. I can't imagine any reason to make the ball - you can
order bearing balls in brass or various other materials as well off of ebay
or any of the usual suppliers

I've done that too. Sometimes I don't want to pay $7 shipping and wait
a week for something I can make in less than an hour. Being retired
does tend to change one's attitude about time vs $$$.