Homebrew PCBs

On Sat, 12 Mar 2005 10:54:32 -0500, Dave VanHorn <dvanhorn@...>  
wrote:

>
> AFAIK, delrin is ok..  We had an embarrassing incident with a bearing  
> that
> was nylon vs delrin, because the engineer in charge insisted on using the
> materials with the lowest possible coefficient of friction.  The  
> prototype
> worked fine in wisconsin in the winter, but failed miserably at a demo.  
> The
> bearing locked up so tight you couldn't turn it with pliers.
> Did I mention that the demo was in Cancun?


ok thanks.

ST