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Showing results for tags 'absorption'.
I recently pulled out my first mugs from a cone 6 firing. I used Draycott Stoneware from Potclays, UK and fire in oxidation to 1050 degrees c slow bisque and 1222 in a glaze firing, slow cooling to achieve matte surfaces with my glazes. I glazed the inside of the mug with a commercial transparent glaze from Scarva pottery supplies (so unsure of the CTE) and the outside of the mug with a satin matte glaze that has a CTE of 6.5. After a week of test using the mug (pouring boiling water I know will have exacerbated the problem), 2 big hairline cracks appeared on the inside of the mug. I smashed t
On a recent Clayflix tutorial by Lisa Naples she mentioned she fires her earthenware to cone 1 or 2, which reduces the water absorption rate by a huge amount and renders the clay almost vitreous. Does anyone have experience with this and, if so, what clay do you use?
Hi guys, I am looking to make a multiple piece mould (imagine I'm casting coke can's and want to make a mould that casts 6 of those coke cans at once). It would be a one piece mold, as in one piece of plaster like a brick with 6 holes in it and a 'plate' piece underneath it. Would this cause an issue to cast 6 masters assembled like a grid, in terms of how the water absorbs into the plaster? ie. With two placed next to each other, would the water absorb through and clash with the water being absorbed from its neighbour? Any help would be great! Cheers.