Dear TJR, what I understand is (meisie) want to put sprayed clay in firing without getting bisque the clay first
and I just say it will not give the same result
And if the clay is bisque at cone 5 the porous are v.small and will not take any more glaze
As Babs stated, you are mixing up the cone numbers. Cone 5 is far too high for a bisque as you are making the clay dense, and no longer porous. you should be bisquing at cone 05 or lower. As stated above, I bisque at cone 06.
In my own studio, I bisque at cone 08, or cone07, as I am paying for the electricity myself, and I don't need to use any more than necessary.