IF I recall correctly, at one time this material
was called "G-10 Epoxy".
Roland F. Harriston
∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
Len Warner wrote:
>
> At 08:22 07/05/15, Digest Number 2184 wrote:
> > Posted by: "kevinmwolf@... <mailto:kevinmwolf%40aol.com>"
> kevinmwolf@... <mailto:kevinmwolf%40aol.com> kevinmwolf288
> > Date: Mon May 14, 2007 11:52 pm ((PDT))
> >
> >I'm sorry- But what exactly is FR4??
>
> It stands for "Fire Resistant grade 4", or something like that
> and it is the common name for the fibreglass board in high-
> quality copper-clad printed circuit board.
>
> It's the green (usually) stuff that is very strong but tough to
> cut, blunts HSSteel drills quickly and makes nasty dust.
>
> I guess that's probably all you need to know, but if you want
> technical detail you now have enough info to Google it.
>
> Regards, LenW
>
>