Hi all, would love some advice with the following problem.
I have recently been handbuilding mugs and I've tried using a thin slip to even out the interiors. The slip is made from the same body as my clay, just strained through a mesh to take out grog and lumps. It's the consistency of cream. I pour it in when the mug is leather-hard, swirl it around, pour it back out and let the mug dry upside down for a while.
The problem is that the slip cracks around the edge of the base where it joins the sides. The question is, what am I doing wrong?
Is the consistency of the slip too thick or too thin?
Do I need to add a deflocculant?
Am I applying the slip when the clay is already too dry?
I didn't have this problem when I was applying the slip with a brush, but I really like the smoothness of the poured slip layer and would like to figure out a way to use this technique without cracking!