These extra large sheets come with a usable area of 19" long x 13" wide compared to the more common 8.5" X 6.5" sheet, making them excellent for larger plates and cutting into strips to wrap all the way around a few mugs. They can can be fired to any temperature and work well in gas, wood, or electric firings. I typically fire to cone 6 and use Amaco zinc free clear ^6 glaze on top. I have also fired them to cone 11 in a reduction kiln with great success.
