Regarding silicone coating rework: First I assume that you are mechanically removing the coating in the affected area and not burning through to repair. Sufficient material must be removed to allow cleaning of the solder pad without recontaminating the solvent by contact with coating remaining on the board. Cleaning solvents by effectiveness: 1. Toluene 2. xylene 3. benzene 4. MEK. Lightly moisten a swab with solvent and wipe the area once, in one direction only. Do not allow solvent to puddle or contact surrounding coating. Repeat this more times than you think necessary. Follow this with a light IPA cleaning, using the above procedure. Don't reuse anything. Good luck! ______________________________ Reply Separator _________________________________ Subject: Rework after conformal coating Author: [log in to unmask] at internet Date: 3/5/96 4:27 PM Anybody have any technical info/references/articles, etc.. on the effect of solderability during a rework operation to a joint that was previously conformally coated with a silicone-based coat. Specifically what are some of the problems that may be encountered with residual silicone and it's effect on solderability ? DDrake