StevenRu on wed 21 jan 98
____________________________________________________________
I handbuilt a hollow HANDLE and attached it to a teapot. I poked a hole in the
handle with the needle tool to permit air to escape during the bisque fire.
Do I need to worry about air escaping during the GLAZE fire, or can I cover
the hole with glaze?
StevenRu@aol.com
____________________________________________________________
Autumn Downey on thu 22 jan 98
At 04:15 PM 21/01/98 EST, you wrote:
>----------------------------Original message----------------------------
>
>____________________________________________________________
>
>I handbuilt a hollow HANDLE and attached it to a teapot. I poked a hole in the
>handle with the needle tool to permit air to escape during the bisque fire.
>Do I need to worry about air escaping during the GLAZE fire, or can I cover
>the hole with glaze?
>StevenRu@aol.com
>____________________________________________________________
>
>Hi, I'm sure you'll get tons of responses, but I've had no problems with
glazing over the hole in a hollow handle.
Autumn Downey
downeya@internorth.com
Yellowknife, NWT, Canada
Liz Willoughby on thu 22 jan 98
>----------------------------Original message----------------------------
>
>____________________________________________________________
>
>I handbuilt a hollow HANDLE and attached it to a teapot. I poked a hole in the
>handle with the needle tool to permit air to escape during the bisque fire.
>Do I need to worry about air escaping during the GLAZE fire, or can I cover
>the hole with glaze?
>StevenRu@aol.com
>____________________________________________________________
Hello Steven,
My experience, contrary to what you might read in a Ceramics Book, is to
NOT poke a hole in a hollow space, that is in a hollow handle or rim. I've
made a lot of folded over hollow rims on bowls and handbuilt hollow
handles. I leave them, bisque them, and glaze them, and very, very, rarely
have I had a problem with cracking during the firings. However, I have
found that if I DO poke a hole in to let the air escape, when I glaze, some
of the glaze gets into that pesky little hole and it will crack in the
glaze firing. So I do not put any little holes in those hollows. I would
be interested to hear of other people's experience in this matter. Best
regards, Liz
Liz Willoughby
R.R. 1
Grafton, Ontario, Canada
K0K 2G0
e-mail lizwill@phc.igs.net
Cindy on thu 22 jan 98
Steven,
The hole is there, even covered with glaze. Air can escape through the soft
glaze if need be. I have done this sort of thing with other hollow pieces
and never had any trouble, even firing at my normal rate.
Cindy in Custer, SD
Robert Katz on thu 22 jan 98
No, do not cover the hole with glaze & fire & I am concerned that glaze
will melt over the hole during firing & you will have an explosion. I am
sure that you can sacrafice one handle of one cup, but be careful that you
are not taking a risk of loosing other vessels.
A hole the size of a needle tool is too small to plug with much that could
possibly burn in the firing. I worry that the hollow handle is risky at best.
Do you have a special reason for that design?
Vicki Katz
Katz Creek Pottery
Sugar Land, Texas
At 04:15 PM 1/21/98 EST, you wrote:
>----------------------------Original message----------------------------
>
>____________________________________________________________
>
>I handbuilt a hollow HANDLE and attached it to a teapot. I poked a hole in
the
>handle with the needle tool to permit air to escape during the bisque fire.
>Do I need to worry about air escaping during the GLAZE fire, or can I cover
>the hole with glaze?
>StevenRu@aol.com
>____________________________________________________________
>
Dannon Rhudy on fri 23 jan 98
----------------------------Original
message----------------------------
>----------------------------Original
message----------------------------
>
>____________________________________________________________
>
>I handbuilt a hollow HANDLE and attached it to a teapot. I poked
a hole
My experience, is to
NOT poke a hole in a hollow space,
---------------------------------------------
I sometimes poke a hole, but usually not, and ignore it at glaze
time. Never had one crack. Val Cushing says that he does NOT
poke a hole in those toroid handles, feet, etc, on his work.
Just brings it slowly up to bisque; doesn't explode. But I know
that some who make large hollow pieces, double-wall bowls, etc.
always poke a hole, clear it of glaze at glaze time.
Dannon Rhudy
potter@koyote.com
| |
|
