Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Hello from a new member, just a small thanks to the arbitrator for having me in your group. On the matter of plating through holes, I recently read an article on the use of conductive ink (Stabillo is the supplier, I think). The board has the TPH and vias's drilled first, then a thin coat of ink is squeegeed on both sides. Using a vacuum cleaner with a nozzle attachment,carefully remove any surplus ink from the holes and allowed to dry. The board is the immersed in a weak solution of acid (sulfuric ?) with a lump of copper and connected to a 12Volt current limited power supply to allow the electro-plating process to evolve, lining the holes with a layer of copper. Will try and find the article and post the link, chester





[Non-text portions of this message have been removed]