On Sat, 20 Feb 2016 01:06:23 -0500, wrote:

On Fri, 19 Feb 2016 21:24:57 -0600, Martin Eastburn
wrote:

It is typically full of silicon. Tough on tooling. Tough on what it
slides against... :-)


I believe that is silica - same stuff sand and glass is made of.

Yeah, what he said.

--
No greater wrong can ever be done than to put a good man at the mercy
of a bad, while telling him not to defend himself or his fellows;
in no way can the success of evil be made quicker or surer.
--Theodore Roosevelt