Re: Mak'in one!
It is perfictly fine to use lead free solder if you are talking about
silver solder which welds copper sheet together. i personally have
welded a very large amount of joins about 10 meter's or so with
silver solder because i have a plate system not a packed column but
that is a different story so to answer your question it is perficaly
fine i have not died or received lead poisoning yet.