Jim West on sun 5 dec 99
Yikes, hope someone can help me with this problem. I'm throwing with
porcelain for the first time and am having a problem with mug handles
falling off during drying. I used the same technique that has worked well
with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
off. If I hold the dismembered handle up to the mug, it looks like the
handle was trying to straighten out during the drying. What I'm wondering is
if there something different about porcelain or if I should be looking for
something more basic in my technique.
Jim West - handleless in Slippery Rock
Stephen Himrod on mon 6 dec 99
jim
try using less water and inverting the pots after the handles are on. both
methods reduce the stress on the handle joint,,,, use gravity in your favour!
Donald G. Goldsobel on mon 6 dec 99
Try drying them under plastic or coat them with wax resist at the joining
point. I use vinegar and get better results than with water. You could make
up some porcelain based spooze. I'll bet that a thin wad\interface of
paper\clay\porcelain would do the trick too. Just don't let it dry too fast
04:06 PM 12/05/1999 EST, you wrote:
>----------------------------Original message----------------------------
>Yikes, hope someone can help me with this problem. I'm throwing with
>porcelain for the first time and am having a problem with mug handles
>falling off during drying. I used the same technique that has worked well
>with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
>off. If I hold the dismembered handle up to the mug, it looks like the
>handle was trying to straighten out during the drying. What I'm wondering is
>if there something different about porcelain or if I should be looking for
>something more basic in my technique.
>
>Jim West - handleless in Slippery Rock
>
Ray Aldridge on mon 6 dec 99
At 04:06 PM 12/5/99 EST, you wrote:
>----------------------------Original message----------------------------
>Yikes, hope someone can help me with this problem. I'm throwing with
>porcelain for the first time and am having a problem with mug handles
>falling off during drying. I used the same technique that has worked well
>with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
>off. If I hold the dismembered handle up to the mug, it looks like the
>handle was trying to straighten out during the drying. What I'm wondering is
>if there something different about porcelain or if I should be looking for
>something more basic in my technique.
>
Jim, tell us what technique you use. I pull mug handles directly on the
mug, using porcelain, and they never come off. If I wait too long to
attach them or dry them too quickly, I might get little stress cracks at
the lower attachment, but these are tiny and non-structural. One thing I'm
careful to do when I attach the lump at the upper point before pulling is
to not attempt to smooth the lump into the wall of the mug-- I leave the
distinction between the lump and the mug untouched, so that if it shrinks
away a bit, it only slightly widens a gap that's already there, and then
the glaze pools in the gap to make a nice accent.
Ray
Aldridge Porcelain and Stoneware
http://www.goodpots.com
Lorraine Pierce on mon 6 dec 99
Not long ago, Jim, I was wrestling with the same problem, and found the
porcelain much more sensitive than my stoneware. I had to 'catch' it when the
moisture content was just right to attach the handle and found very little lee
way. And you will find out only thru trial and error; all porcelains are not
alike in this respect. I gave up pulling them on the pot and and now pre-pull
them, cut off the tails and lay them flat, then cut an arc more or less to the
curve of the mug, then attach it with slip and shape it. I equalize the moisture
content of the mug and handle in a damp box I made with a plaster
floor, eventually drying them out completely, very slowly, by venting the box,
a bit more each day. Ron Roy said he applies vinegar to his porcelain handles
and that it helps...them...him. Good luck. Lori in new Port Richey Fl.
Jim West wrote:
> ----------------------------Original message----------------------------
> Yikes, hope someone can help me with this problem. I'm throwing with
> porcelain for the first time and am having a problem with mug handles
> falling off during drying. I used the same technique that has worked well
> with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
> off. If I hold the dismembered handle up to the mug, it looks like the
> handle was trying to straighten out during the drying. What I'm wondering is
> if there something different about porcelain or if I should be looking for
> something more basic in my technique.
>
> Jim West - handleless in Slippery Rock
Mark & Pauline Donaldson-Drzazga on mon 6 dec 99
----- Original Message -----
From: Jim West
To:
Sent: 05 December 1999 21:06
Subject: Porcelain Handles Commit Suicide - Help!
> ----------------------------Original message----------------------------
> Yikes, hope someone can help me with this problem. I'm throwing with
> porcelain for the first time and am having a problem with mug handles
> falling off during drying. I used the same technique that has worked well
> with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs
fell
> off. If I hold the dismembered handle up to the mug, it looks like the
> handle was trying to straighten out during the drying. What I'm wondering
is
> if there something different about porcelain or if I should be looking for
> something more basic in my technique.
>
> Jim West - handleless in Slippery Rock
>
Dear Jim,
very slow drying. Youcould wrap the handled mugs in newspaper, this will
even out the drying and ease off the stresses.
Happy potting Marek http://www.moley.uk.com
Cindy Strnad on mon 6 dec 99
Jim,
Have you tried slipping a plastic food bag over each mug for a day or
several in order to allow moisture to even out and the handle to dry slowly?
Cindy Strnad
Earthen Vessels Pottery
Custer, SD
Jennifer Howard on mon 6 dec 99
Jim,
Porcelain has a mind of it's own (and a memory). Patience is your friend.
Cover your mugs for at least 24 hours after your put on your handles and
they should do better. Good luck.......J. howard
At 04:06 PM 12/5/99 EST, you wrote:
>----------------------------Original message----------------------------
>Yikes, hope someone can help me with this problem. I'm throwing with
>porcelain for the first time and am having a problem with mug handles
>falling off during drying. I used the same technique that has worked well
>with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
>off. If I hold the dismembered handle up to the mug, it looks like the
>handle was trying to straighten out during the drying. What I'm wondering is
>if there something different about porcelain or if I should be looking for
>something more basic in my technique.
>
>Jim West - handleless in Slippery Rock
>
Jackie Richards on mon 6 dec 99
I am just a real beginner, but I have been experimenting with porcelain clay
mixed with toilet paper to make it easier to throw/handle/sculpt. Maybe just
a smidge might work for you? Don't know since I don't have the experience to
really help you.
Jackie in Tucson, strugglin' along
John Rodgers on mon 6 dec 99
Jim, put a plastic bag over it and let it dry really slowly. The bag should
capture moisture from the clay so the air in the bag will be uniformly moist and
saturated. The moisture loss will be much more uniform and will probably
eliminate the breaking.
I have done a lot of slip casting work with porcelain slip in the past, and this
kind of breakage is common. I always used a "damp box" box to keep the drying
atmosphere uniform until drying was complete.
I have found it necessary to treat thrown grolleg porcelain work the same way.
John Rodgers
Birmingham, AL
Jim West wrote:
> ----------------------------Original message----------------------------
> Yikes, hope someone can help me with this problem. I'm throwing with
> porcelain for the first time and am having a problem with mug handles
> falling off during drying. I used the same technique that has worked well
> with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
> off. If I hold the dismembered handle up to the mug, it looks like the
> handle was trying to straighten out during the drying. What I'm wondering is
> if there something different about porcelain or if I should be looking for
> something more basic in my technique.
>
> Jim West - handleless in Slippery Rock
Wendy Moore on tue 7 dec 99
I also have this problem on occassion. I have found that I must put an arc, as
closely resembling the final one, in them as soon as they will support it. If I
don't, they try to straighten out every time. I pull six to eight handles, the
return to the first and pull them over into the arc. I also find that attaching
them with a slurry made with vinegar and dry porcelain rather than water helps a
great deal. But you must cover them tightly afterward to equalize or it's all f
naught.
In fact I've got a load to check on now. Happy handling!
Wendy Moore > wendym@globalbiz.net
The Apron Lady
Lorraine Pierce wrote:
> ----------------------------Original message----------------------------
> Not long ago, Jim, I was wrestling with the same problem, and found the
> porcelain much more sensitive than my stoneware. I had to 'catch' it when the
> moisture content was just right to attach the handle and found very little lee
> way. And you will find out only thru trial and error; all porcelains are not
> alike in this respect. I gave up pulling them on the pot and and now pre-pull
> them, cut off the tails and lay them flat, then cut an arc more or less to th
> curve of the mug, then attach it with slip and shape it. I equalize the moistu
> content of the mug and handle in a damp box I made with a plaster
> floor, eventually drying them out completely, very slowly, by venting the box
> a bit more each day. Ron Roy said he applies vinegar to his porcelain handles
> and that it helps...them...him. Good luck. Lori in new Port Richey Fl.
>
> Jim West wrote:
>
> > ----------------------------Original message----------------------------
> > Yikes, hope someone can help me with this problem. I'm throwing with
> > porcelain for the first time and am having a problem with mug handles
> > falling off during drying. I used the same technique that has worked well
> > with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
> > off. If I hold the dismembered handle up to the mug, it looks like the
> > handle was trying to straighten out during the drying. What I'm wondering is
> > if there something different about porcelain or if I should be looking for
> > something more basic in my technique.
> >
> > Jim West - handleless in Slippery Rock
Sharon on wed 8 dec 99
Like others have predicted, paper clay can help.
Or I should say, it solved my problem with porcelain
handles cracking.
Also, attach the handles when the mug is as wet
as possible, invert the mugs and dry slowly.
Sharon
The Lane Pottery, Hinsdale, Illinois
amy parker on wed 8 dec 99
I use vinegar instead of water to attach the handles, and I mix vinegar to
thin my slip. Works great on my porcelain.
At 04:06 PM 12/5/99 EST, you wrote:
>----------------------------Original message----------------------------
>Yikes, hope someone can help me with this problem. I'm throwing with
>porcelain for the first time and am having a problem with mug handles
>falling off during drying. I used the same technique that has worked well
>with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
>off. If I hold the dismembered handle up to the mug, it looks like the
>handle was trying to straighten out during the drying. What I'm wondering is
>if there something different about porcelain or if I should be looking for
>something more basic in my technique.
>
>Jim West - handleless in Slippery Rock
>
>
amy parker Lithonia, GA
amyp@sd-software.com
Marcia Selsor on fri 10 dec 99
I did some amazing repair work on several porcelain handles including a
gapping space of a drying crack of 1/4". I snapped it off and mixed
some paper clay using porcelain paower and toilet paper as someone on
clay art suggested. I repaired all the handles and they survived. It is
best if they stay on when put there in the first place though.
Marcia in Montana
amy parker wrote:
>
> ----------------------------Original message----------------------------
> I use vinegar instead of water to attach the handles, and I mix vinegar to
> thin my slip. Works great on my porcelain.
>
> At 04:06 PM 12/5/99 EST, you wrote:
> >----------------------------Original message----------------------------
> >Yikes, hope someone can help me with this problem. I'm throwing with
> >porcelain for the first time and am having a problem with mug handles
> >falling off during drying. I used the same technique that has worked well
> >with stoneware clay. But with the porcelain, the handles on 3 of 3 mugs fell
> >off. If I hold the dismembered handle up to the mug, it looks like the
> >handle was trying to straighten out during the drying. What I'm wondering is
> >if there something different about porcelain or if I should be looking for
> >something more basic in my technique.
> >
> >Jim West - handleless in Slippery Rock
> >
> >
> amy parker Lithonia, GA
> amyp@sd-software.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
WHew536674@cs.com on sat 11 dec 99
Jim,
I've put handles on porcelain and I let the piece dry slowly. After a day or
two, I uncover, but wrap the handle in plastic wrap and keep in covered till
the mug is dry, then take the wrap off the handle and let it catch up.
Havn't lost one.......yet.
Joyce A
| |
|
