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Author Message   Br1078lum Tinkerer Username: Br1078lum Post Number: 534 Registered: 11-2010 Rating: N/A Votes: 0 Posted on Tuesday, April 16, 2013 - 07:59 pm:    Get some flux paste from the plumbing section of the hardware store. Put a bit on the place you want to solder, then heat it with the iron (recommend nothing bigger than 15w) to clean the surface. Scrub it with a wire brush (preferably brass), then dab a little of the flux on it again, and it will be ready to solder. On your wire you are attaching, dip it in the flux, then apply some solder to it. This is called "tinning", and helps when you go to solder the final joint. You can also do this to the tab on the battery well you are trying to solder to. When you are done, clean the joint with some alcohol to remove any flux residue. Too bad about the bodge job on the lens mounting. Drop a photo here, and maybe the collective can put their few remaining neurons to good use, and figure it out for you. PF