I am an electronics tech servicing 10+ year old amateur radio gear. The trouble I am having is with a single sided through-hole board. Areas of the board are covered with wax. Over time the boards malfunction as the wax works its way into the solder. Hand resoldering is a nightmare as the wax continues to wick towards the connection. Heating the board and draining the wax away does not help as some wax residue is left. Also, components become damaged from the air gun. The boards are also covered in contact cement that has become corrosive and conductive. Currently we are using Methaline Chloride to soften the glue and then pick it away. Questions are as follows: 1) How can the wax be completely removed? 2) How can the glue be removed without using such a toxic substance as paint stripper? 3) Is there an economical device that can be purchased to reflow these old boards without hand resoldering hundreds of cold/contaminated connections? Any help would be greatly appreciated! --------------------------------------------------------------------------------- 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 e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest 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 ---------------------------------------------------------------------------------