thanks, yes, and even if we leave the tip blobbed uo to heck, the flux would still probably burn off and not be next to the tip, and so wouldnt degrade it if the tip was left blobbed up to heck..........and also, as you say electronics fluxes like rosin dont attack the iron anyway....so in fact, a worker can leave the iron hot-in-the-holder with a huge blob of solder covering the tip, and not be guilty of abusing the iron tip i presume?