Somehow, my reply to TechNet got bounced back, here is attempt #2. --------------------- Forwarded message: From: [log in to unmask] To: [log in to unmask] (RSedlak) Date: 95-11-20 08:46:51 EST ---- message ---- User matthew.hecht not listed in public Name & Address Book ---- message ---- Content-Type: Message/rfc822 Content-Description: RFC822 To: TechNet <[log in to unmask]> bcc: "matthew.hecht" <[log in to unmask]> From: RSedlak <[log in to unmask]> Date: 17 Nov 95 22:30:45 EDT Subject: Re: Re[3]: Electroless plating MIME-Version: 1.0 Content-Type: Text/Plain Re: tilted racks in electroless plating We did some research in the lab on this subject for an article, the writing of which is forever being postponed. We measured the drain time, by actually weighing a panel as it was pulled from a bath, and plotted the weight over time. This was done by suspending the panel from a digital scale, and noting the weight readout as a function of time. We tested panels suspended level, and tilted in the X-Y axis. We were stunned to learn that the tilting made essentially no difference in the drain rate. We did not investigate tilting in the Z axis. To give this audience the summation of the work, you do not buy yourself anything significant, in terms of draining, for hold times over 40 seconds. This was done with 18" X 24" panels, with the long dimension horizontal. You do definitely buy yourself significantly improved drainage by holding for at least 30 seconds after the bottom of the panel has cleared the bath. Rudy Sedlak RD Chemical rsedlak @aol.com ---- message ------