If you can't find a supplier for solid bars, the next best thing would be to just go to a hardware store and go to the plumbing section. Buy some smaller copper pipes and then smash them flat in a vice into solid bars. Then just drill out some holes and voila, ghetto bus-bars //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif It may not look as nice as a solid chunk, but it'll be 100% copper and should carry plenty of current.