All the smoke and fumes are from the flux and resins burning off. You could take the paste, soak it in some hot IPA/DI water mix for an hour or so and pour off the solution. You should be left with the pure (or less contaminated) alloy. Doug Pauls CSL *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************