Hello, Orchid People.
This is my first post to this forum and I hope someone here can help
me as I am thoroughly frustrated and nearly blind from reading
through archives all over the Internet, trying to find a snippet of
I read who-knows-where, a while back.
Someone posted in a forum or wrote in an article that they used a
common household alternative to alumina hydrate or vermiculite to
support PMC pieces and keep them from slumping in the kiln. It was
either baking soda or baking powder, I think, but I can’t remember
for sure and don’t want to cause any damage to my new programmable
kiln or my PMC pieces in my ignorance. Has anyone here used or heard
anything about the use of any kitchen-cupboard substances for this
For the record, this is more a matter of availability than a re-hash
of the safety issues. I know that asbestos-free vermiculite is
available these days. I just don’t know where. So, if there is no
readily-available household alternative to be had, then can anyone
tell me where, exactly, I can procure either vermiculite or alumina
hydrate in small quantities (5 lbs or less), either locally in the
Phoenix, AZ metro area or on the Internet? I am googled out and any
help would be sincerely appreciated!