blocked screws

[Paul Perry]

At 07:13 AM 3/07/99 PDT, Aldo Giovannigiacomo wrote:

>Is there any chemical product that can help to unblock these screws without 
>damage accidently the near circuitry?

The damage is done when the screwblade slips out and across the surface of
the screwhead.
I use a substance that increases the friction between the screw and the
screwdriver.
It appears to be a suspension of silicon carbide grit in oil. A mechanic
told me that
'valve grinding paste' might work as well. My stuff is a purely Australian
product.
I've actually managed to remove 'security' screws with completely the wrong
tools using this.

"loosening" stuff is a lot commoner, even WD40 will work.

paul perry melb australia