Homebrew PCBs

Hi,

Does anyone know how to get hold of blank PCB material, similar to the
usual 1.6mm thick copper-clad stuff, but ultra ultra thin?

I'm thinking about the recent threads about hacking inkjets to print
onto PCB via the CD tray.

The idea is if that the copper-coated medium is thin enough, it will be
able to pass through any unmodified inkjet. The other good thing is that
inkjets (as opposed to lasers) tend to have a much straighter paper
path.

Digikey only seems to sell 3/4" copper tape - way to narrow for most
boards.

Any ideas?

Cheers
David