acidblue pravi:
> I found some copper clad boards on ebay that use CEM material
> instead of the FR-4 that I'm familiar with.
>
> Has anyone used CEM before?
> Is it any different from FR-4?
>
>
Depend's what you want!
Mechanicaly is not so good. If you use shear to cut it the edge is bad.
On the other side the drill bit's last much longer. It's less heat
resistant and has different dielectric constant. But if you do ordinar
hobby project's (not for radio frequency above 100MHz) the CEM is just
good choice.
Slavko.