How "not clean enough" are you. We are producing 1 mil lines and spaces in a class 10,000 clean room. Several parts of this clean room are not really correct but it works. (the vinyl tile floor is not cleanroom adequate) At my last job, many years ago, I created a "clean space" by cutting off traffic, improving filtering (but not to the HEPA level) and putting the operators in smocks and bouffant. Just creating a clean attitude is the 60% of the battle. If your operators have not worked in a clean environment then you will have more training to do than construction. Chuck Brummer Siemens Canoga Park, California (818) 734-4930 -----Original Message----- From: Mike Holst. [mailto:[log in to unmask]] Sent: Friday, October 11, 2002 3:54 AM To: [log in to unmask] Subject: [TN] Clean room. Good day Technet community, I would like to draw on the experience of those in pcb fabrication and ask for opinions or advice regarding the need for clean working areas in the pcb shop. Our laser plotter / phototool production area and photoresist lamination / exposure operations have been identified as 'not clean enough' to reliably produce 4 mil lines and spaces. We do OK down to 5 mils. These areas are already 'nominally' clean but separate departments and the plan is to intergrate them into a single upgraded operation in a new location. If it is advised that this should to be made a classifiable clean room, what Class level are we talking about? If not, how clean is clean enough? Mike Holst. Mike Holst. TraX Interconnect (Pty) Ltd Tel:(++27 21)712 5011 Fax:(++27 21)712 5798 Cape Town South Africa ---------------------------------------------------------------------------- ----- 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 ---------------------------------------------------------------------------------