Slips, Engobes and Terra Sigillatas - Alfred's Clay Store

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Fluxes• Help fuse the slip to the body• Selection is temperature dependent <strong>and</strong>reflects what we already know for claybodies– High temp-Feldspars/+auxiliary fluxes– Mid temp-Neph Sy/Talc/Frits– Low temp-Frits/Talc• Color response to oxides or stains will beenhanced or impeded by our choice flux– Similar to a glaze in this respect
Hi Soda3110Hi Calcium/Boron3124Hi Calcium/Boron/Alumina3195Hi MagnesiumTalc
Page 1 and 2: Slips,Engobesand TerraSigillatasLec
Page 3 and 4: Glazing over slips• Great way to
Page 5 and 6: Formulating slips• A slip can be
Page 7: Clays• Chosen for their relative
Page 11 and 12: Hardeners• Used to improve hardne
Page 13 and 14: Colorants• Can be added as either
Page 15 and 16: Slip compositions• Note changes i
Page 17 and 18: Wet vs. Bisque• Wet application s
Page 19 and 20: The shrinkage myth• Many bisque-a
Page 21 and 22: Terra Sigillata• Dense, silky-smo
Page 23 and 24: • Ball mill ingredientsand place
Page 25 and 26: Like GeologyMaking a Terra Sigillat
Page 27 and 28: Drawbacks to Terra Sigillata• Gla
Page 29 and 30: • Extreme thickness change from t
Page 31: Multiple firings,then cut on abrick
Page 35 and 36: SpackleExampleCone 04Raw Claw10Calc
Page 37 and 38: Vitreous vs. Non-VitreousV.C. 5 vit
Page 39 and 40: Robert SperrySteve Heinemann
Page 41 and 42: Solutions to cracking in dryingstag
Page 43 and 44: Cracking due to trapped air• Slip
Page 45 and 46: Cracking after firing• Can also b
Page 47: Shivering!
Page 50 and 51: Using a pintool as athicknessgaugeT

Slips, Engobes and Terra Sigillatas - Alfred's Clay Store

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