You dont specify the size and kilowatt power imput of the kiln so
the amount of insulation and space behind and above cannot be
I can give you an example of what I did some 2 yrs ago.
I built a Swiss all timber chalet here for the better half, and
installed a new wood burning stove of 6 kw output.
The guide lines were 4 in minimum between the stove back and flue
pipe and a masonary wall. Our wall is wood!!.
So In addition to that I added 1in of air space between the wall and
the 1st asbestos fireproof sheet then another 1in between that sheet
and a second sheet. then the 4in of air space at least 1ft bigger
than the stove all round and also behind the flue pipe.
Using a thermocouple when the stove was running at max output, the
temperature between the wall and the 1st asbestos sheet was ambient
This satisfied my fire insurance co.
Use your common sense and you should be ok.
Run some trials to get it right.
On a ring using sterling its going to be all down to technique.
you have to support the ring from the inside on a stainless ring
then the enamel will have to be stuck in the groove.
itll need several firings to get it up to level with the metal
4.Then youll have the issue of fire stain as enamelling has to be
done in an oxidising atmosphere.
how you deal with that is not an easy problem, unless you use fine
ie 999 silver. That works fine.
Next the signet ring.
Similar problems with the metal if you use sterling…
If its gold then it will need to be an alloy of fine gold and fine
that will not oxidise in the kiln.
Now you might think of using an anti firestain flux. however enamel
and that dont mix, how you plan to keep the 2 apart, as both get
fluid at enamelling temp, is in my view almost an insoluable problem.
mainly a large 1/4in thick wire fork on a long handle shaped like a
pistol hand grip for loading and unloading the small trivets from
the heavier items will need thicker forks.
Stainless steel trivets you make yourself from sheet and wire.
The first few jobs will run at a loss as your starting out from the
Also enamel on rings is really a contradiction in terms.
nothing but trouble in my experience. Most folk dont know how to
take care of anything enamelled.
The 1st 7yrs of my time in this trade was doing nothing but
most enjoyable but with hindsight, not profitable.
And that was experimenting with every known enamel on every metal
that would take the 800 deg C kiln and flame temp and more…
in Dorset UK.