Karen Shapiro on sun 13 dec 98
Hello one and all,
Need another tip from you knowledgeable folks (and thanks so much to all who
have responded to me up to now).
I have a piece which I raku fired yesterday (a matt glaze -- hardly even a
glaze; it's mostly vanadium pentox), then used liquid acrylic floor wax as a
cold finish (works quite well, by the way) -- and this is sculpture, not a pot
--
My question is: what would happen if I refired this piece; will the acrylic
burn off or get funky or what? The refiring would also be raku. I have
wondered about this for awhile. Anyone done it?
Thanks from winey Sonoma,
Karen
Karen Shapiro on mon 14 dec 98
Hi all,
Am replying to my own post. First of all, I must say that as wonderful as
Clayart is (and don't misunderstand, I LOVE it and all the help I've been
getting) it tends to make me a bit lazy!
I did a test myself (after coming to this conclusion) and found that the
finish (acrylic) burned off and left no residual effects. I did, however, go
inside while the raku was firing to avoid any noxious fumes that might have
ensued.
Sorry about my sloth,
Karen
lpskeen on mon 14 dec 98
Karen Shapiro wrote:
>
> ----------------------------Original message----------------------------
> Hello one and all,
>
> Need another tip from you knowledgeable folks (and thanks so much to all who
> have responded to me up to now).
> I have a piece which I raku fired yesterday (a matt glaze -- hardly even a
> glaze; it's mostly vanadium pentox), then used liquid acrylic floor wax as a
> cold finish (works quite well, by the way) -- and this is sculpture, not a pot
> --
> My question is: what would happen if I refired this piece; will the acrylic
> burn off or get funky or what?
Karen,
I had a saggar fired piece that came out totally black, but I waxed it
anyway. Decided I didn't like it and re-bisqued to get rid of the
black. The wax burned off (just like wax resist) and the black burned
away too, leaving the most awesome burnt orangey sienna kinds of marks
on the pot! Needless to say it sold already.....
I say go for it, you can't hurt anything if you don't like it now, I
doubt if it'll get worse.
--
Lisa Skeen ICQ# 15554910
Living Tree Pottery & Soaps http://www.uncg.edu/~lpskeen
FAILURE IS NOT AN OPTION!!! It comes bundled with the software.
The Bill of Rights - (void where prohibited by law)
Sheilah Bliss on mon 14 dec 98
>>>My question is: what would happen if I refired this piece; will the
acrylic
burn off or get funky or what? The refiring would also be raku. I have
wondered about this for awhile. Anyone done it?<<<
Hi Karen -
I've re-rakued pieces that've had ceramic sealer in limited areas on them.
Ceramic sealer is a similar acrylic coating to floor acrylic. It just burns
away early on in the firing, and the glaze ingredients remain and perform
their glaze duties. I'd guess the same would happen with the floor acrylic.
Sheilah Bliss
cyberscape on tue 15 dec 98
Karen,
Yes the acrylic will burn off and yes you can refire raku pieces if the
clay is of a cooperative nature. I refire pieces sometimes 7-8 times,
building up layers of surfaces which interact with each other. I have
found is that it helps to let the clay "settle down" for at least a few
days between firings. I also do not quench the pieces after firing. I
do sandblast, though, and sometimes acid etch the surfaces. Good luck.
Harvey Sadow
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