Earl Brunner on wed 4 oct 00
If you are choking the the flow by packing your ware to
tightly, especially around the flue then that could be a
possible problem.
Your bottom shelf should be higher than the top of the flue.
Are you staggering your shelves or stacking them straight
across?
Do you have a bagwall and if so try lowering it?
All possibilities.
Lynne at The Pottery Web wrote:
>
> We are having trouble firing a down draft gas kiln, about 35 cu.ft, with 2
> Ward burners with blowers, using propane gas. Our problem is moving heat
> around the kiln; today we could not get heat to the bottom. We finally
> shut down after 7 hours of trying. Before we start again tomorrow, and
> since we are relatively new to this process, i wonder what we are
> missing! I know it takes experience, which we are trying to gain, but in
> the meantime, (and to help us along a little!) could someone suggest things
> we might try. we've tried everything we know--moving damper in/out,
> increasing/reducing gas/air and i've checked the archives. any other ideas?
>
> Thanks in advance for any help!!!
>
> Lynne in Atlanta
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
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--
Earl Brunner
http://coyote.accessnv.com/bruec
mailto:bruec@anv.net
Lynne at The Pottery Web on wed 4 oct 00
We are having trouble firing a down draft gas kiln, about 35 cu.ft, with 2
Ward burners with blowers, using propane gas. Our problem is moving heat
around the kiln; today we could not get heat to the bottom. We finally
shut down after 7 hours of trying. Before we start again tomorrow, and
since we are relatively new to this process, i wonder what we are
missing! I know it takes experience, which we are trying to gain, but in
the meantime, (and to help us along a little!) could someone suggest things
we might try. we've tried everything we know--moving damper in/out,
increasing/reducing gas/air and i've checked the archives. any other ideas?
Thanks in advance for any help!!!
Lynne in Atlanta
Marcia Selsor on thu 5 oct 00
What is the floor plan of your kiln. How high are the bagwalls and first
shelf?
Marcia
Lynne at The Pottery Web wrote:
>
> We are having trouble firing a down draft gas kiln, about 35 cu.ft, with 2
> Ward burners with blowers, using propane gas. Our problem is moving heat
> around the kiln; today we could not get heat to the bottom. We finally
> shut down after 7 hours of trying. Before we start again tomorrow, and
> since we are relatively new to this process, i wonder what we are
> missing! I know it takes experience, which we are trying to gain, but in
> the meantime, (and to help us along a little!) could someone suggest things
> we might try. we've tried everything we know--moving damper in/out,
> increasing/reducing gas/air and i've checked the archives. any other ideas?
>
> Thanks in advance for any help!!!
>
> Lynne in Atlanta
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
--
Marcia Selsor
selsor@imt.net
http://www.imt.net/~mjbmls
http://www.imt.net/~mjbmls/spain99.html
http://www.silverhawk.com/ex99/selsor/welcome.html
WardBurner@AOL.COM on thu 5 oct 00
In a message dated 10/4/00 10:57:43 PM, lmb@POTTERYWEB.COM writes:
<< We are having trouble firing a down draft gas kiln, about 35 cu.ft, with 2
Ward burners with blowers, using propane gas. >>
Lynne,
I've serched my data base and the only Lynne in Atlanta that has our burners,
has a pair of Venturi burners. Otherwise, I'd have called, but I'm not sure
who to call....please give me a call.
Marc Ward
Ward Burner Systems
PO Box 1086
Dandridge, TN 37725
865.397-2914 Voice
865.397-1253 Fax
wardburner@aol.com Email
wardburner.com Online Catalog
Tim J Havens on thu 5 oct 00
Aloha Lynne and all;
With all the other good suggestions I would add that if it is at all
possible ; put a peep hole above each burner so you can look down the
firebox to the back wall . You'll be amazed at how much you can learn
about controlling the fire by just being able to see where it's going;
how the sides can vary just because of the stacking patterns , how long
and short flames move during reduction and oxidation periods . You might
think about using oil or waste oil just to add more excitement to the
game . - - - - - When in doubt, turn it up ! !
Alohaz Tim
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