Original poster: "Steve Cook by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Steve-at-g8cyerichmond.freeserve.co.uk> I have just found some stainless steel rimless bowls, the sides are almost vertical. The metal is about .5mm thick. My idea is to use a pair to make an oblate spheroid top terminal for a coil. Can anybody give me an idea as to how I might a pair together rim to rim.