Alan B. Pearce rl.ac.uk> writes: > Unfortunately all fluxes act as a sponge, so any water around will get Well, if you have long term reliability concerns, use something that has been pre-tested. I'd say the piece with the cricket has the necessary guarantees (24 million years old): http://www.ambericawest.com/better.html I only make medium life expectancy prototypes (well under 200 years), so music wire rosin is good enough for me ... Peter P. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist