Graham Daniel wrote:
>
> Here's a summary of two of my replies to Wagner on the subject, [OT] but
> still of interest to many tech-picsters.
> <snipped>

Also as fillers, microspheres are pretty interesting (tiny glass
spheres.)  They can make an epoxy pretty thick.  Good for potting
electronics (as glass is a decent insulator), so I mention it here.

  Mark