Greetings, I recently ran across a good deal on deal on *untinned* 22ga solid hookup wire that will be used primarily on solderless breadboards and other projects for a design lab at a University. I realized that most of the wire that I have used recently for breadboarding circuits in pre-tinned. I understand that there are probably more complicated issues concerning production and high-volume work, but I am only concerned about the one-of projects and prototypes. Am I going to get myself in trouble if I buy 1000' of untinned copper wire? I guess I'm just thinking twice about it because it was about 1/2 price and on "surplus". Issues I can think of are: -oxidation of copper. -ease of solder of pre-tinned wires. Are there other issues? I can't remember having any problems before. I can't even remember it being an inconvenience. Thank you, Chip -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist