SHOP › Experimental Low Fire Jar Image 1 of 2 Image 2 of 2 Experimental Low Fire Jar $20.00 sold out Tried cone 3 for the first time this year, and this was in an electric kiln. It is glazed inside and food safe. Sold Out Added! Tried cone 3 for the first time this year, and this was in an electric kiln. It is glazed inside and food safe.