Chantay Posted May 27, 2015 Report Share Posted May 27, 2015 I have a glaze using wollastonite. The wollastonite does not change at all it seems in the glaze slurry from the bag, insoluable. After mixing and screening there remains a small amount of the wollasonite in the screen. It's about a tablespoon for a 2000 gm batch of glaze. I think the wollastonite is about 20 percent of the glaze, not sure, don't have it here. Questions: is this amount left in the screen significant enough to change the glaze? I don't have a ball mill, any suggestions on getting rid of the chunks? I know I could screen it before hand, but screening the dry powder is a nightmare. The ceramics store person was not knowledgeable in this area (not the regular guy.) Link to comment Share on other sites More sharing options...
Min Posted May 27, 2015 Report Share Posted May 27, 2015 Probably won't make a difference if you leave it out. Wollastonite is approx 1/2 silica and 1/2 calcium carb so you could weigh some of each out and sub that. It doesn't melt as well as wollastonite but I doubt 1 TBS will make a difference in a 2000 gram batch. You could try whizzing it in a blender with some of the glaze and see if that breaks it up. Link to comment Share on other sites More sharing options...
Joseph Fireborn Posted May 27, 2015 Report Share Posted May 27, 2015 Can't you just use a mortar and pestle? I know it will take more time, but I thought that was a pretty good replacement for a ball mill. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted May 28, 2015 Report Share Posted May 28, 2015 can you put it in a blender? Marcia Link to comment Share on other sites More sharing options...
rayaldridge Posted May 29, 2015 Report Share Posted May 29, 2015 I wouldn't worry about it. In a 2000 gram batch, if a tablespoon makes any actual difference, the glaze is too finicky. Link to comment Share on other sites More sharing options...
Mark C. Posted May 29, 2015 Report Share Posted May 29, 2015 Blender for thrift store-must have item mar Link to comment Share on other sites More sharing options...
Chantay Posted May 29, 2015 Author Report Share Posted May 29, 2015 OK, thanks for the answers. When putting it in the blender I am assuming doing it after mixing with water. A food processor would acctually work on the dry stuff, but don't have a spare. I got a blender shortly after starting to use clay. I love to make smooth buttery slip in it and paper clay and mix colored slip. I thought of a mortar and pestal, but I don't see that as a long term fix. I like this glaze and plan to mix it in larger batches which I will be using a great deal of. Link to comment Share on other sites More sharing options...
PeterH Posted May 29, 2015 Report Share Posted May 29, 2015 I thought of a mortar and pestal, but I don't see that as a long term fix. I like this glaze and plan to mix it in larger batches which I will be using a great deal of. ... I suspect rayaldridge is right, and the quantity involved is/should-not-be significant. However if you are going to make this glaze repeatedly, and you are certain that it's the wollastonite staying in the sieve, why not just add a little more to allow for loss-on-sieving? Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.