Larry, It is in the Dec. 2007 issue of Glass on Metal, in an article
written by Pam East, who got the from Priscilla Vasso,
who in turn learned it from Gilberto Maxxotti of Brazil. So, this
wonderful hint has been passed around.
Now, I do hope those who are reading this will get Glass on Metal
and read the whole article, but for those who need immediate
assistance in removing enamel from metal, here is the proceedure.
It is very simple, safe, and effective. All you need is to mix equal
parts of table salt and Cream of Tartar (which you will find at any
grocery) Add enough water to make a thick paste…
Apply the paste to your enamel, covering it completely. Place the
piecein your preheated hot kiln and fire it for 2 minutes. It will
smoke and turn black. Remove your piece from the kiln, and drop
immediately into a bowl of ice cold water.
I have not tried this, but have been assured that it works. The only
thing I have been puzzled about is putting the wet mixture into the
The article does not specifiy that it should be dried first. Also, I
see, from the picture in the article that Pam uses a small table top
(beehive) kiln, not a big kiln, so combustion should not be a
At any rate, try to get a copy of the article as the pictures are
very helpful. Hope this helps.