Need a couple of chunky peltier coolers, one around 120 W another above 60 W. Recommended are 12709 and 12710, plenty of suppliers on Amazon/eBay but they all seem to be Far East based.
CPC etc have such devices but at £15 to £20 each, where as the Far Eastern ones are less than a fiver delivered. Can anyone recommend (or not) a Far Eastern supplier?
The lad wants to build a cloud chamber as a Christmas present for himself. Old ATX PSU for the peltiers, hefty CPU heatsink, sealable clear bowl, sponge soaked in isopropanol and Americium-241 from old smoke detector as a source. Peltiers are a bit more convenient than dry ice, though might not work quite as well.