i need to buy some dome shaped solid copper or other good conductor but i cant find any online or locally.Please add a list of the best conductorsThank you
Best conductors in order (best conductivity first) are Silver, copper, gold, aluminum resistivity Ag 15.9e-9 Ω-m resistivity Cu 17.2e-9 Ω-m resistivity Au 22.14e-9 Ω-m resistivity Al 28.2e-9 Ω-m resistivity W 56e-9 Ω-m resistivity Zn 68e-9 Ω-m resistivity Fe 100e-9 Ω-m resistivity Pt 105e-9 Ω-m resistivity Nichrome 150e-8 Ω-m you need to find a machine shop that specializes in copper, if this dome is largeAnd you do say it is solidYou would have to start with a solid block of copper and machine it downVery expensivelook in the yellow pages under machine shopEdit, the other answers are assuming you want a dome made of sheet copperI assumed a solid dome, not hollowWhich is it? edit2: hollow, just get a sheet of copper of the thickness you want and hammer it on a wooden formIt might be easier if you started with a circle and cut wedges out, say 4 or morethen when you hammer it on the form, the missing sections would come together, and you could solder them together .
