There are new masks from Tech Spray and Dymax Corp (the latter UV curable) which both purport to be 100% water soluble. Peter -- ========================================================= Peter Swanson [log in to unmask] INTERTRONICS http://www.intertronics.co.uk INTERTRONICS is dedicated to providing quality material, consumable and equipment solutions to the electronics manufacturing and other technology based industries, with the highest levels of technical support and customer service. -----Original Message----- From: Douglas Pauls [mailto:[log in to unmask]] Sent: 12 January 2001 13:58 To: [log in to unmask] Subject: Re: [TN] RF Surface mount... Steve, In addition to everything else that has been said, and forgive me if this has been, ..... but if you can do an aqueous clean after reflow how about dispensing a water soluble mask .... then just wash it off afterwards! *As the cleaning experts all run from the room screaming incoherently...... I have yet to see a water soluble mask that is *fully* water soluble. You *assume* that it all goes off the board and down the drain. In reality, it deposits itself on other places on your board, lines the walls of your cleaner, coats the pipes of your plumbing, etc. Since cleaners often don't get the maintenance they need, you have your wash section simply become a mechanism for applying low levels of dissolved mask on your boards. As you might guess, I am not a fan of water soluble masks. I'm not a fan of latex peelable masks either. Too much crud left on the board after you peel them off. Doug Pauls, Rockwell Collins ------------------------------------------------------------------------ --------- 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 ------------------------------------------------------------------------ --------- --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------