Measuring For Firing

How to measure and submit works for firing

All works submitted to the firing process must be measured and a “Firing Request Form” must be filled out prior to being placed on the Greenware shelf, in the kiln room. High production members such as production potters or any member concerned about going over their monthly firing allotment included in their membership, should keep track of their monthly cubic firing inches used, in order to better estimate any additional cost for firings. Cubic inches used are measured not by the size of works to be fired, but by the space that works take to be fired in the kiln. Specialty items such as beads and tiles requiring special kiln furniture, will include the inches of the kiln furniture in the total inches.  All pieces fired have a 2 inch minimum on the height.  Below are instructions to help members calculate and keep track of their firing inches.  To make things easy, we have created an online Firing Inches Calculator that will help calculate the cubic inches a piece will take to fire.  See our Firing Inches Calculator here.

How to measure your wares

Measuring your work for firing is quite easy. The length the width and the height must be included. For most round vessels the length and the width will be the same, but if you are measuring a vessel with a handle, spout or anything that protrudes, the measurement must include the protrusion.

 How your firing inches calculated for wares

Firing inches for wares are calculated by the space that a vessel takes to be fired in the kiln, including the glaze firing. To calculate your cubic inches for a vessel follow the steps below or see our Firing Inches Calculator here.

  1. Calculate the cubic inches for the bisque firing.   Length x Width x Height = Bisque Total
  2. Calculate the cubic inches for the glaze firing.   (Length+1″) x (Width+1″) x (Height+1″) = Glaze Total
  3. Finally add Bisque Total to Glaze Total.   Bisque Total + Glaze Total = Firing Cubic Inches

How your firing inches calculated for tiles or pieces shorter than 2 inches.

Firing inches for tiles are calculated by the space a tile needs to be fired in the kiln, including the glaze firing. To calculate your cubic inches for a tile follow the steps below or see our Firing Inches Calculator here.

  1. Calculate the cubic inches for the bisque firing.   Length x Width x 2″ = Bisque Total
  2. Calculate the cubic inches for the glaze firing.   (Length+1″) x (Width+1″) x (2″) = Glaze Total
  3. Finally add Bisque Total to Glaze Total.   Bisque Total + Glaze Total = Firing Cubic Inches

Keeping Track of Your Inches

Members are responsible for fees incurred during the firing process.  It is encouraged that all members keep track of their Firing Cubic Inches throughout the month, if they would like to produce only up to their monthly firing allotment without going over.   The Firing Cubic Inches monthly allotment resets each month and does not rollover.  Firing Cubic inches are not transferable between members.  A membership must be current in order to take advantage of the inches included in the monthly allotment.


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