Abstract: An apparatus to manufacture or produce articles such as printed circuit boards comprising at least one module having an entry and exit opening formed on opposite ends thereof and a transport mechanism comprising a continuous conveyor including a plurality of interconnected conveyor links to support the articles thereon and an entry and exit roller seal assembly each including a pair of rotatable seal rollers disposed to seal the entry and exit openings respectively and engage the articles passing through the entry and exit openings respectively, an article guide to maintain the articles in a substantially vertical position as the articles transverse the apparatus and a fluid supply to expose both sides of the article uniformly with fluid.