Does anyone etch boards with a simple immersion dip in agitated solution ? I realize spray etching is the norm, but I was hoping to get some info on immersion etching and avoid some of the problems of relatively complex spray equipment. (since etching rate is not a prime concern for us). After some experimentation I found agitation with large amounts of fine bubbles works the best. About 80 L/min (3 cfm) of air evenly distributed over a tank bottom area of 500x300mm (20"x12"). Porous rubber hose seems to produce finer bubbles and better distribution than a few holes drilled into a length of PVC piping. I'd be interested learning more about what is out there in the world of etching. regards, Adam Seychell --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/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 ---------------------------------------------------------------------------------