It is possible to have a glaze slurry that is a joy to use, but only if you understand the physics of the materials in the glaze recipe.
This article has been moved to the Troubleshooting section (named "Glaze Slurry is Difficult to Use). See the link below.
Ask yourself the right questions to figure out the real cause of a glaze crawling issue. Deal with the problem, not the symptoms.
Glaze Slurry is Difficult to Use or Settling
Understanding glaze slurry rheology is the key to solving problems and creating a suspension that does not settle out, applies well, dries crack free.