Pennies aren't made of copper anymore and the zinc makes a puky mess. Marbles
will work if they're glass, but if they have other stuff--plastic??--they make a
blob. Try some in a cone 05 kiln. Add clear glaze to the marbles. Sid
Karen Barhorst wrote:
> Recently there were a few interesting postings that suggested pennies and
> glass marbles could be used as glazes. Sounds interesting. Does anyone
> have more information on this? What cone are these two materials fired at?