[sudo-discuss] help with DIY PCB etching?

Hi folks, We could use some help with etching a printed circuit board at CCL next Saturday. Anyone have experience doing this? Any special equipment available in Sudo? The goal is not actually to make a PCB, but rather to use the copper traces of a PCB as a mold to cast silicone rubber on top, to make a microfluidic circuit. Thanks! Patrik