PeppernPatches Posted December 19, 2014 Report Share Posted December 19, 2014 I have been mixing a Cone 6 clear gloss glaze that is very stable and consistent. It's a Glossy Clear Liner recipe (see below). However, the super shiny surface makes my pieces look "plasticy". It also changes the clay body color dramatically. I have two questions: 1) Does anyone know how to modify this recipe so it's less glossy? I don't want a matte finish. I would like something between satin and semi-gloss. 2) Will changing the sheen effect the clay body color somewhat? Thanks! GLOSSY CLEAR LINER 100G G-200 FELDSPAR 20 FERRO FRIT 3134 20 WOLLASTONITE 15 EPK KAOLIN 20 TALC 6 SILICA 19 TOTAL 100 Link to comment Share on other sites More sharing options...
High Bridge Pottery Posted December 19, 2014 Report Share Posted December 19, 2014 Do you still want it to be transparent? From what I have read matt, semi-matt glazes can be produced in a few ways. Having a lower Si/Al ratio, under firing the glaze or a slow cool. You could try taking out 5 of the silica and adding 5 extra of epk to see if that gets you closer to what you are looking for. There are magnesium matts which I think are helped by a slow cool so you could try adding a little more talc. Link to comment Share on other sites More sharing options...
neilestrick Posted December 19, 2014 Report Share Posted December 19, 2014 I would start with a slower cooling cycle if that's a possibility. Otherwise, you can get away with increasing EPK and reducing silica and still stay within limits. I'd test 3% increments. As it becomes more matte you will lose transparency, so don't go too far. The silica to alumina ratio is currently high enough that you should be able to knock down some of the glossiness and still stay nice and clear. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted December 19, 2014 Report Share Posted December 19, 2014 you could reduce the silica by 1-3% and add a little more kaolin 1-3% and slow the cooling times as Neil suggests. Marcia Link to comment Share on other sites More sharing options...
Harold Roberts Posted December 22, 2014 Report Share Posted December 22, 2014 What is the color of your clay? If you have a red clay and you want a warmer tone you might need to scap the recipe altogether. I would experiment with some titainium oxide. It can sometimes matt your glaze som as well as opacify. Link to comment Share on other sites More sharing options...
PeppernPatches Posted December 23, 2014 Author Report Share Posted December 23, 2014 YES, I would like a satin clear glaze that is transparent. The glossy clear liner is great because there's no cracking, the coverage is consistent and even, but it looks too shiny and plastic. I use both red and white clays. Mostly where I see a problem though, is with my red clay that I use white slip over, then I carve designs into the clay. I leave the outside unglazed, but the inside of the bowl needs clear glaze. See here: I will try adding a tiny bit of EPK to my existing batch to see if it makes a difference. Just wondering if anyone has a satin, semi-gloss recipe that s very different from my current glossy liner, for when I start a new batch. Thanks again! Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.