Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Sebastien Bailard <penguin@...>
wrote:
>
> Can any one recommend a supplier for FR-3 (paper-reinforced epoxy)
boards in
> Canada? I spent a while poking at the website, but I don't think
digikey
> carries them.
>
> I'm looking for paper-reinforced epoxy since I've got this
cnc-converted mill
> and I was reading that I should stay away from glass-epoxy boards.
>
> Also, what are the guidelines on board thickness and copper thickness?
Do
> people typically use 1oz copper 1/6" thick boards for most projects?
(I'm
> building stepper controller circuits.)
>
> Regards,
> Sebastien Bailard
> RepRap.org - self-reinforcing 3D printer project.
> p.s. For people interested in building a RepRap, I've got a forum up
here:
> http://sebastien.webfactional.com/forum
> If it takes off, we'll move it onto the main site and make it
official.
>




You might want to check Ebay there are several vendors selling copper
clad, but have not seen paper backed.

If you are building stepper control boards, if one sided I would use the
2oz copper for the heavy traces needed for the current.  Have you been
on CNCzone?  PMINMO has quite a few stepper boards and interface boards
as well.

good luck

Charles