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.

Cedar tends to have a fair amount of it too. One of the things that
makes both a little tricky to glue.
Martin

On 2/19/2016 10:55 AM, Cydrome Leader wrote:
Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Cydrome Leader fired this volley in news:na5mgv
:

Anybody know if there was a preferred type of wood used for screwdriver
handles?

For good ones, it was often Rosewood early-on, then Walnut, often. The
"Perfect Pattern Handle" was the first successful commercial version.

Rosewood is one strange material. Had a small coupon of it on my keychain
for years, it was outlasting the other metal junk attached next to it.