Phil: Bees wax may contain organic contaminates which in the right operating environments may cause a contamination issue. That's why it's only a class 3 issue. Gregg Owens -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Bavaro Sent: Wednesday, October 12, 2011 4:30 PM To: [log in to unmask] Subject: [TN] Lacing tape I discovered that we are using lacing tape which is wax impregnated to tie off cabling. IPC-A-610 states in section 4.4.1: "Note: Do not subject wax impregnated lacing tape to cleaning solvents. Beeswax is unacceptable for Class 3." I have been asked to find out the reason for this restriction. My immediate answer is that we don't want to take a chance of re-depositing wax (a contaminant) onto other surfaces that may require conformal coating or possible onto conductive surfaces such as connector contacts, switch contacts, etc. Is there another possible reason? We don't expose the lacing tape to solvents, but it is beeswax impregnated so my recommendation is to have Production go buy the unwaxed lacing tape that is available. Many lives ago I experimented with making thermoplastic potting compounds from synthetic polyolefins from Eastman and learned quite a bit about "wax". But I don't know the reason why beeswax is prohibited other than stated above. Thanks in advance, Phillip Bavaro ------------------------------------------------------------------------------ This message and any attachments are solely for the use of the addressee and may contain L-3 proprietary information that may also be defined as USG export controlled technical data. If you are not the intended recipient, any disclosure, use or distribution of its content is prohibited. Please notify the sender by reply e-mail and immediately delete this message and any attachments. ______________________________________________________________________ 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 16.0 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 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 16.0 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 For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------