Barbsbus 4 fun Posted November 3, 2020 Report Share Posted November 3, 2020 I would like to make some olla pots for Christmas presents and was wondering if I should bisque fire them to cone .06 I have some cone 5 clay or would it be better to fire them at .o4? Just want to make sure the pots will work best. Link to comment Share on other sites More sharing options...
Sorcery Posted November 3, 2020 Report Share Posted November 3, 2020 Do you mean only firing the cone 5 clay to 04? Or also then firing to 5? Sorce Link to comment Share on other sites More sharing options...
kristinanoel Posted November 3, 2020 Report Share Posted November 3, 2020 What a great idea! Question for firing experts - what happens if she were to fire to 06, fill with water and test how long it takes to seep through - if it was too fast, could she fire AGAIN to 04? What would the actual result be on the ware? Link to comment Share on other sites More sharing options...
Barbsbus 4 fun Posted November 3, 2020 Author Report Share Posted November 3, 2020 1 hour ago, Sorcery said: Do you mean only firing the cone 5 clay to 04? Or also then firing to 5? Sorce I am hoping I could just fire to 06 or 04 since they have to be able to wick water for the plants and if I fired them to 5 they wouldn't let out the water. Link to comment Share on other sites More sharing options...
Barbsbus 4 fun Posted November 3, 2020 Author Report Share Posted November 3, 2020 52 minutes ago, kristinanoel said: What a great idea! Question for firing experts - what happens if she were to fire to 06, fill with water and test how long it takes to seep through - if it was too fast, could she fire AGAIN to 04? What would the actual result be on the ware? That sounds logical , thanks Link to comment Share on other sites More sharing options...
liambesaw Posted November 3, 2020 Report Share Posted November 3, 2020 You can try at 06 and then refire to 04, not a problem... I will sometimes re-bisque pots that have been laying around getting dirty just to clean them up. As far as firing to 06 or 04, I think it depends on your body. When I bisque to 04, my body weeps so slowly it would be useless as an olla. I know because I have made closed planters (no drainage hole) and they will sit full of water for weeks. Link to comment Share on other sites More sharing options...
Sorcery Posted November 3, 2020 Report Share Posted November 3, 2020 50 minutes ago, Barbsbus 4 fun said: I am hoping I could just fire to 06 or 04 since they have to be able to wick water for the plants and if I fired them to 5 they wouldn't let out the water. Forgive me, I didn't read beyond "used to cook stews". I guess these thoughts still apply.... There is a difference in strength between a body which is fired to maturity and still porous, and a body that is underfired. I guess the concern then would mostly be where they will be used, in a soil prone to heavy dense compaction, even without freeze, a weaker body may be more likely to break. Perhaps run some porosity tests on your clay, as well as you can between 04 and 5, and see what offers the best porosity/strength. To get the best use of what you have. I personally think these are one of the items we can dig free local earthenware to make. Fired to maturity, yet porous. ? Sorce Link to comment Share on other sites More sharing options...
Min Posted November 3, 2020 Report Share Posted November 3, 2020 I would try an earthenware clay, fired to maturity or slightly under it's still going to have high absorption and it would in all likelihood be stronger than underfiring a mid range claybody. Link to comment Share on other sites More sharing options...
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