I have a loose understanding of the flocculation - defloculation issue, and have been doing well with my ^6 glazes for several years. Lately, with a couple of buckets that have been around my studio for 3+ years, I have noticed issues that make me wonder if they need to be deflocculated some, rather than the usual flocculation process I use with most buckets. Do glazes change over time in this respect?
This is new to me and I would like some advice before I start tampering with them. I have read several articles on this issue and done a web search for more info, but still...
They are from M^6Glazes, so are well balanced recipes. Although they don't settle into a hard layer at the bottom of the bucket,( I am familiar with that degree of defloculation ) When dipped, the glaze runs and forms heavy drips on the ware, no matter how I rotate the piece while it drips. I actually pop the glaze beads off after the glaze dries. The dipped pieces dry quickly except for the lower edge where they went into and out of the bucket and the final drips landed. That takes longer to dry.
The fired results looks thin. Do I need to use some Darvan in this glaze? Are there degrees of defloulation? These glazes have a layer of about 2" of clear water on top, then a very fluffy. easily stirred mixture that seems somewhat well dispersed down to the bottom of the bucket. This is after sitting several days. I thought a deflocculated glaze settled into a chewing gum like layer.
Can someone offer advice? What about a thread that pinpoints symptoms of glazes that need one treatment or the other to behave well when dipping?