Somewhat more abrasive than the eraser, a fiberglass pencil will work also. I've used them to clean severely oxidized pads with good results when an eraser wasn't quite enough. Mike -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Roberts, Jon (SA-1) Sent: Monday, February 08, 2010 9:41 AM To: [log in to unmask] Subject: Re: [TN] contact cleaner- recommendation Erasers are made from rubber. I know if you look up what erasers are made of you get all kinds of chemicals or materials. The biggest thing is it can made of natural material or synthetic materials. I believe (hard to know or at least for me since I am not chemist) that synthetic may contain silicone. I thing the only way is to have it tested or ask the manufacture. All my training through the years I was informed to tell my students not to use erasers for the possibility that it could contain silicone. I decided to check for ESD properties and took two erasers (one on the end of a mechanical pencil and one was just a standalone eraser) and using a ESD static meter found by rubbing the erasers on an ESD mat, I could charge the erasers. Just putting in my two cents worth. Jon -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Croslin, Robert Sent: Monday, February 08, 2010 9:25 AM To: [log in to unmask] Subject: Re: [TN] contact cleaner- recommendation Never really knew. We developed the chemical cleaning into a process after out 6 Sigma black belt "guru" validated it for production and refurbishment use. Fortunately, the VP of Engineering reviewed it and went along with my and my Quality guy's objections that the test criteria were way too subjective and it wasn't sufficiently proven. Amazingly, the problem then seemed to go away. A few months later, our repair/refurb supervisor disclosed he'd begun using the eraser to clean the edge connectors of the tuner cards and simply not tell anyone. Even the extensive FA we had done be a very reputable lab, never really defined the problem. We still have units reach our field reps that tested fine before shipping, but don't boot up. They remove the cover and reseat the tuner card and memory sticks on the mother board and everything works perfectly for the two to five years the meter is in a home. Go figure. Bob -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez Sent: Monday, February 08, 2010 9:32 AM To: [log in to unmask] Subject: Re: [TN] contact cleaner- recommendation How much gold was removed after each cleaning with the 'ol pencil eraser? How was the residue remove from the card/board? Did it cure the issue? Victor, -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Croslin, Robert Sent: Monday, February 08, 2010 7:57 AM To: [log in to unmask] Subject: Re: [TN] contact cleaner- recommendation About three years back, we went through an extensive testing process of all the commercial cleaners out there, including having FA performed on samples due to what appeared to be connector fretting on our meters. None worked easily and even the best required extensive scrubbing and cleaning. We finally settled on Chester's solution, the good 'ol pencil eraser in stick form, and the problem was solved. Bob Croslin The Nielsen Company -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Harner, Chester Sent: Friday, February 05, 2010 6:11 PM To: [log in to unmask] Subject: Re: [TN] contact cleaner- recommendation #2 Eberhard Pencil (NASA) -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Tan Geok Ang Sent: Friday, February 05, 2010 2:29 PM To: [log in to unmask] Subject: [TN] contact cleaner- recommendation Hi All, In market what is the most common and good contact cleaner used? To ensure better, reliable and long term contact. Thanks. Regards GA Tan --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ------------------------------------------------------------------------ -------- We value your opinion! How may we serve you better? Please click the survey link to tell us how we are doing: http://www.craneae.com/ContactUs/VoiceofCustomer.aspx Your feedback is of the utmost importance to us. Thank you for your time. ------------------------------------------------------------------------ -------- Crane Aerospace & Electronics Confidentiality Statement: The information contained in this email message may be privileged and is confidential information intended only for the use of the recipient, or any employee or agent responsible to deliver it to the intended recipient. Any unauthorized use, distribution or copying of this information is strictly prohibited and may be unlawful. If you have received this communication in error, please notify the sender immediately and destroy the original message and all attachments from your electronic files. ------------------------------------------------------------------------ -------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- This communication is intended only for use by the addressee(s) named herein and may contain business confidential and/or legally privileged information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, disclosure or copying of this e-mail and its contents is strictly prohibited. If you have received this e-mail in error, kindly notify the sender by replying to this message. In addition, please permanently delete the message and any attachments without copying or disclosing the contents. Thank you for your cooperation. THIS DOCUMENT AND/OR SHIPMENT MAY CONTAIN COMMODITY ITEMS, SOFTWARE OR TECHNICAL DATA THAT IS CONTROLLED BY U.S. EXPORT LAW, AND MAY NOT BE EXPORTED OUTSIDE THE UNITED STATES OR TO NON U.S. PERSONS WITHOUT THE APPROPRIATE EXPORT LICENSE FROM EITHER THE U.S. DEPARTMENT OF STATE OR DEPARTMENT OF COMMERCE. ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------