AndreaB Posted January 18, 2017 Report Share Posted January 18, 2017 Hi everyone, yes it's me again asking about terra sig! I've tried doing some research on this subject and I haven't found the answer. I know t.s. is used in raku but is it used in any other way? thanks. Andrea Link to comment Share on other sites More sharing options...
Kellykopp Posted January 18, 2017 Report Share Posted January 18, 2017 I use it on barrel fired work, but that is still low fired stuff. I may be wrong but it is my understanding of sig that if you use it on higher fired work that it loses it's sheen, but I haven't had enough experience with it to tell you for sure as I have not taken it to higher temps myself. I haven't heard of it flaking off at higher temps, would imagine if it "fits" your clay body that it could be used like a slip?? Perhaps testing is in order?? You never know, through testing it you may come up with a new technique or application for sig. The only problem I have encountered is flaking where I have applied it too thickly. I am sure there are others here that know more than I do. Link to comment Share on other sites More sharing options...
MatthewV Posted January 18, 2017 Report Share Posted January 18, 2017 Terra Sigallata can be used to make earthenware clay impermeable to water. This use has largely been replaced by fully vitrified work (and plastics). It can be used in earthenware oxidation firings to give a skin-like sheen to a piece. Useful if you wish to make figures with bare clay. Link to comment Share on other sites More sharing options...
Sputty Posted January 18, 2017 Report Share Posted January 18, 2017 . Link to comment Share on other sites More sharing options...
Marcia Selsor Posted January 18, 2017 Report Share Posted January 18, 2017 I use it on my sagger pots both ceramic and foil. It really picks up the fuming from the chemicals at the low temperatures and doesn't lose the sheen. I have also used it for smooth obvara pieces. Maybe its just me, but I think the obvara does some cool patterns of the smooth finish. The greeks used it for the red and black ware by using 2 different T.S. and firing one to the sintering temperature and then reducing. T he Romans used it in their Barbotine ware to seal the surface as Matthew said. Some ceramic sculptors use it for a nice finish for the surface even overfiring it to high temps. Marcia Link to comment Share on other sites More sharing options...
Marcia Selsor Posted January 18, 2017 Report Share Posted January 18, 2017 here is a good example of Barbotine http://ancientpoint.com/imgs/a/g/x/q/m/fine_roman_barbotine_red_ware_pottery_skyphos_1_lgw.jpg Marcia Link to comment Share on other sites More sharing options...
Magnolia Mud Research Posted January 18, 2017 Report Share Posted January 18, 2017 I use terra sigillata (TS) on stoneware to reduce the 'scratch-ness' of the bottoms of some pots. I also use TS made with local red clays as a decorative 'stain' for making marks on stoneware (cone 10) pots in areas that will be unglazed. The TS mark will have different visual and tactile textures than the surrounding area. LT Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted January 18, 2017 Report Share Posted January 18, 2017 I've used terra sig in cone 10 soda. It does indeed loose the high powered shine that it has when it's burnished and fired to lower temperatures, but it still has a pleasant soft, satiny feel. Link to comment Share on other sites More sharing options...
What? Posted January 19, 2017 Report Share Posted January 19, 2017 Foot ring application for grogged or sanded stoneware. Works good for horsehair pottery even though this is fired raku style. Link to comment Share on other sites More sharing options...
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