Kristiistiisti Posted May 28, 2016 Report Share Posted May 28, 2016 Hi - my first questioning post. Sorry if this is redundant. I have white art earthenware and it says cone 04 to 01 to maturity. What is the bisque temp. for this clay? I see on a chart 018 - 016 for burnished low fire for sawdust firing. If I want to paint underglazes and then clear coat of glaze do I fire to 018? What I'm not getting is this. You want your clay to be fired to maturity, so you go to 04-01 and then glaze and the glaze firing is lower temp? I'll keep reading, but I'd really like it if someone can enlighten me. Thanks, Kristi Link to comment Share on other sites More sharing options...
Pres Posted May 28, 2016 Report Share Posted May 28, 2016 Welcome to the forums Kristi. I hope you will get an answer to your question soon I fire to 06 for bisque for mid-range stoneware. I do believe that 06 would work very well for you also. At this point your clay should be vitrified enough not to break during handling, unless you are careless, and porous enough to take you underglazes and glazes. Others will horn in with other opinions and will have more experience than I in dealing with Earthenware ranges, so I am sure they will help you out. Welcome once again! best Pres Link to comment Share on other sites More sharing options...
bciskepottery Posted May 28, 2016 Report Share Posted May 28, 2016 https://s3.amazonaws.com/amacobrent/section_images/attachments/2447/original_low-fire-clay-comparison-chart.pdf?1425666025 Amaco suggests a bisque at cone 04 and glaze at cone 05, although it appears you can fire the clay as high as cone 3. You can put you underglazes on at either leatherhard or bisque; I prefer leatherhard as it reduces the potential for the glaze application smearing the underglaze. Link to comment Share on other sites More sharing options...
Kristiistiisti Posted May 28, 2016 Author Report Share Posted May 28, 2016 Welcome to the forums Kristi. I hope you will get an answer to your question soon I fire to 06 for bisque for mid-range stoneware. I do believe that 06 would work very well for you also. At this point your clay should be vitrified enough not to break during handling, unless you are careless, and porous enough to take you underglazes and glazes. Others will horn in with other opinions and will have more experience than I in dealing with Earthenware ranges, so I am sure they will help you out. Welcome once again! best Pres Thanks for your timely reply!! I'll go with this! Link to comment Share on other sites More sharing options...
Kristiistiisti Posted May 28, 2016 Author Report Share Posted May 28, 2016 https://s3.amazonaws.com/amacobrent/section_images/attachments/2447/original_low-fire-clay-comparison-chart.pdf?1425666025 Amaco suggests a bisque at cone 04 and glaze at cone 05, although it appears you can fire the clay as high as cone 3. You can put you underglazes on at either leatherhard or bisque; I prefer leatherhard as it reduces the potential for the glaze application smearing the underglaze. So this leaves me to wonder if the clay is fired to maturity at this temp.? One firing chart I was looking at said 04-1 lowfire clays mature.So a bisque at 04 and glaze at 05 leaves me to wonder if the clay ever fires to maturity. Link to comment Share on other sites More sharing options...
bciskepottery Posted May 28, 2016 Report Share Posted May 28, 2016 https://s3.amazonaws.com/amacobrent/section_images/attachments/2447/original_low-fire-clay-comparison-chart.pdf?1425666025 Amaco suggests a bisque at cone 04 and glaze at cone 05, although it appears you can fire the clay as high as cone 3. You can put you underglazes on at either leatherhard or bisque; I prefer leatherhard as it reduces the potential for the glaze application smearing the underglaze. So this leaves me to wonder if the clay is fired to maturity at this temp.? One firing chart I was looking at said 04-1 lowfire clays mature.So a bisque at 04 and glaze at 05 leaves me to wonder if the clay ever fires to maturity. At cone 05/04, no where near maturity . . . nearly 14% absorption rate. You might get maturity at the top firing range -- cone 3. From Amaco: Wider firing range - from Cone 04 to Cone 3 Resists crazing - low moisture expansion Shrinkage: Cone 04, 6.3% Absorption: Cone 04, 13.7% Link to comment Share on other sites More sharing options...
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