I'm doing a survey to determine how others in industry are cleaning (assuming you do clean) flux residue from hand soldering operations like soldering wires to terminals on small sub-assemblies, etc. I'm really interested in military hardware, but all can reply. My questions are as follows: 1) Military or Commercial? 2) Clean or no clean? 3) What flux type are you using? 4) Hand or machine cleaning? 5) What chemical or solvent are you using? 6) Are you happy with your present cleaning process? 7) Any additional comments? Thanks for your time and cooperation. I will tabulate all of the results and post it on Technet when complete. Jim Marsico (516) 595-5879 [log in to unmask] ******************************** * ______ _ _ _____ * * / ___ | | | | | _____ * * / /___| | | | | | _____ * * __/ ____ | | | | |______ * * |____/ |_| |_| |________| * * * * SYSTEMS, INC. * ********************************