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starbuck3733t:
Thanks gooserider & bb2k. I'll have to do more digging into a how-to on the #rotor style. I'm just concenred with how to get 1/2" OD barbs onto the thing.
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Easiest way to do it would be to use thicker copper, but what I would do is use smaller barbs and tubes, then set up a split loop to avoid getting excess restriction. Of course you might not need to go that much thicker - the Rotor setups I've seen seem to me like they are best suited for 2 layers of ~ 3/8" Cu plate, or 6/8" = 3/4" thick. If you were to use one of the smaller thread sizes, or make your own nipples from tubing, it should be possible to make them fit into that thickness.
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I do have a surplus city about 45 minutes away from me, I'll have to check it out sometime when I'm in that area. Hadn't thought of them for stuff like that. Would a 'sheet metal shop' have copper blocks to play with?
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A sheet metal shop is unlikely to have blocks, but they might be able to point you at a good source. Machine shops might be even better. However it is worth remembering that Cu is actually not that commonly used, as there are relatively few applications that need it's properties. The place I get my Cu from is part of "Admiral Metals" in Woburn, MA. They are one of the biggest non-ferrous metal wholesale suppliers in the Northeast, they may go as far south as PA, I'm not sure. Part of their business is doing 'custom cuts' to give their big customers specific sized peices, which often gives them 'remnants' of whatever is left over from the standard sized peices. Rather than selling the leftovers to the scrapyard, they retail them off to small scale customers at less than full cost, but more than what the scrapyard would give them.
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Is there a good site to teach me how to solder copper together, or should I just have my friend, whose dad is a plumber, do it instead?
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Soldering copper isn't that terribly difficult, and is a useful skill. There are threads here that describe the techniques, and after that the best way to learn is to get some scrap and PRACTICE... It's very much one of those subjects where the theory is important but there is no substitute for hands on doing it. OTOH, your plumber contact could do it for you without even trying hard. (but I like doing things myself better)
Gooserider