Thanks Dave, I never would have thought of that process. What I have is a relatively old piece of equipment needing resurection. It consists of linear bearings, and their rusted surfaces, that may be reproduced if the rust removal process is not effective. These bearings are not available from my local King bearing dealer or anywhere else I can find. The big thing in all this is a valve body with multiple openings that are fairly precise. It's kind of like those found in automatic transmissions. The body needs to function nearly as original and I'm trying to weigh the cost of attempting to do the rust removal process or making a new one. Also, I can't remember all I forgot about electroforming but for using the process in the early '70" to make precise aluminum parts, that were gold vacuum deposited for night vision device amplifiers. Could electroforming be used on steel, when an acid rust removal process has been used, to restore its original condition. Long shot, I'm sure. Earl --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------