keramik on mon 15 oct 01
I have tried application of lustre with a blow torch today,
after checking my face mask (thank you everybody who replied) =
apparently, the type I have got is perfectly adequate.
Guess what, the pot cracked.
Fortunately it was a second so no harm done...then tried putting another =
one in the kiln beforehand, to about 300C, taking it out and using the =
blow torch to fix the gold, that seemed to be ok.
Does anybody have any experience with applying lustre by this method and =
know what I possible could get away with without the pot cracking?
Angela
Essex, UK
BobWicks@AOL.COM on mon 15 oct 01
In a message dated 10/15/01 10:24:37 AM Eastern Daylight Time,
keramik@UKONLINE.CO.UK writes:
> Angela
>
Hi Angela:
I do Raku firing and if you need to do more reduction, always heat the
project up well before you use your torch and allow it to cool slowly. You
can wrap it in alumina wool when you take the torch away and then it cools
slowly. Good luck. By the way you can also do this by applying gold
overglaze and it works just fine.
Bob
Cindy Strnad on mon 15 oct 01
Dear Angela,
I've used a heat gun on pots in an attempt to burn
off unwanted wax resist (doesn't work), and yes,
as you now know, you certainly can crack the pot.
This was a bisque piece, and so should have been
more resistant to cracking than a vitrified piece.
The more "flame-proof" your clay body, the more
likely it will be to withstand this treatment.
However I think you'll need to heat the pieces up
in order to prevent thermal shock. Otherwise,
you're always taking that chance.
Best wishes
Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
cindy@earthen-vessels-pottery.com
http://www.earthen-vessels-pottery.com
Janet Kaiser on tue 16 oct 01
I suspect you did not start out with a cool flame and
"waft" the pot with the blow torch first? That helps
heat up the whole pot first, so it can stand the
concentrated heat better.
Janet Kaiser
The Chapel of Art . Capel Celfyddyd
HOME OF THE INTERNATIONAL POTTERS' PATH
Criccieth LL52 0EA, GB-Wales Tel: (01766) 523570
E-mail: postbox@the-coa.org.uk
WEBSITE: http://www.the-coa.org.uk
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