Attaching bisque to bisque foot won't stay put !
Posted 08 May 2012 - 10:48 AM
I have a bisque tea pot with 3 little attached feet.
One fell off with the slightest tap.
I've tried one of the mender products that is apt to work, but it's not staying on.
I presume that the clay will fuse if I can get it stay on until firing ... but also a bit worried that the mender stuff could actually prevent the clay from fusing by inserting a non clay layer (mender is sodium silicate I presume).
Anyone have any secret trick for this ?
Did the mender worsen the situation?
Additional info : Cone 10 white stoneware.
Thanks in advance !
Posted 08 May 2012 - 11:18 AM
Kiln Repair Tech
Owner, Neil Estrick Gallery, LLC
Posted 08 May 2012 - 12:59 PM
For paper clay patch I mix:
the clay body in a powdered state
a little water
a little vinegar
a dash of Karo syrup
and about 15-25 % paper pulp volume to the powdered clay. Toilet paper works here for small quantities.
I mix this in a blender to a consistency of thin peanut butter. Apply onto a dampened wet surface.
Posted 08 May 2012 - 01:47 PM
We use two products which will work for you at cone 10
One is from amaco-bisque fix
The other is high fire mender made by Marx- both will work-I favor the high fire mender which you mix up with your own clay body-
We have used these for years at cone 10 with outstanding results
If you can just glaze it on as Neilstrick says that is an easier fix
But if its not on a glaze area try these two products or you can glaze right over them each well the bisque fix covers better with glaze.
I also have some Lees patch but have yet to test it.
I like the idea of Marcias home made stuff-I will try a batch of it.
Posted 08 May 2012 - 08:02 PM
It works. For bisque to bisque you need to wet the surface very well and then retire in the bisque.
Posted 09 May 2012 - 12:56 PM
Posted 13 May 2012 - 08:48 AM
I think you would need to have a waster slab from the beginning before the bisque. 17-18% is really high shrinkage. I use 1/4" extruded coils arranged in wheel spoke pattern for anything like large sculpture, bird bath stems, or things with feet.
Posted 14 May 2012 - 07:27 PM
Wish me luck ... it's the best tea pot I've ever made and would hate to have to shard-pile the thing before it has even made tea!
If it doesn't stay on using any of the suggested methods, you can attach the foot using PC-11 epoxy glue after firing. PC-11 can be tinted (I've used grated pastel crayons for tinting) so you can disguise the joined area. You can buy PC-11 (and -10, which is black) in hardware stores. And it's good for so much more....