Genny It's a long time since I heard such a suggestion :-( This is murder to any reliability. Horrendous, horrent, horrible, horrid, horrific, horrified, horripilated, horror-struck hardly describes it. NO WAY! Brian Genny Gibbard wrote: > Consider a hand rework situation. > We had a revelation from our production floor that occasionally a > certain product is cleaned using a no-clean flux pen. We have a product > that the customer is very stringent that if we use no-clean solder on > their product, we must not clean any residue off the board with our > standard board wash. > However, if a component is removed and replaced during a rework > situation, often there is a lot of excess flux residue left on the > board. It came to light that in order to make this look better, they > were applying a small amount of no-clean flux to the area with a flux > pen, and then scrubbing the area with a brush. > > There were several horrified expressions around the table when this came > to light. > > What would be the dangers of doing this? The board is not heated like a > reflow situation, or anything like that, after the 'cleaning' operation, > so does this mean the flux may not be 'inert'? I thought that it is > no-clean flux used in the rework in the first place - why do they need > to clean it off? They said that it looked awful, and the inspectors > wouldn't let the product thru if it wasn't cleaned up. > > Thoughts, suggestions? Should we be horrified, or just let them continue? > > Genny Gibbard (mailto:[log in to unmask]) > > --------------------------------------------------------------------------------- > 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 > --------------------------------------------------------------------------------- > --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------