Thank you Linda, that helps a lot. Bought a firing pan from Art Clay
World and it was too big. When they listed it as 4", I assumed it
was the overall size, not the depth of the pan.
Having looked at their return policy, I think I’m stuck with it. I
think I have some small terra cotta planters, but they have a hole
in the bottom
Is the ‘no hole’ thing important?
So far Art Clay World has been the cheapest source of Copper Clay,
if bought in quantity. Their price on activated carbon is very good
as well. Nice bonus, free shipping on anything over $150 and it’s
UPS, not the post office.
If you have the time, could you list the brands/manufacturers of
silicon two part putty? Just the names will be fine, I can google
from there 
I have book marked the Metal Clay Acadamy page and will go check it
out. Will take me some time, there’s a lot for my ADD addled mind to
assimilate.
Liz