Popular Science has a neat article on how to make your very own version of platinum spark plugs using 1/10-ounce platinum coins for electrodes: http://www.popsci.com/popsci/how20/8e69ee64bb7d1110vgnvcm1000004eecbccdrcrd.html
Popular Science has a neat article on how to make your very own version of platinum spark plugs using 1/10-ounce platinum coins for electrodes: http://www.popsci.com/popsci/how20/8e69ee64bb7d1110vgnvcm1000004eecbccdrcrd.html