In response to your question regarding the use of LRF for tinning stranded wire, we also are presently using RMA for this operation. We are considering the use of Kester (Hughes) HF1189A flux for this application. (You do have to clean it, though.) There has been a joint study performed on this subject by China Lake, Hughes, and Texas Instruments. A Department of the Navy memorandum was issued June 15, 1994, which recommends that HF1189A be allowed for the tinning and soldering of stranded wire. I hope this is some help. If you need more information, I suggest you call John Fisher at (619) 939-1602. If anyone is actually using HF1189A for tinning stranded wire, I'd like to hear from you. Thanks, Jim Marsico Manufacturing Engineer AIL Systems, Inc. Deer Park, NY (516) 595-5879