SKU: ORTONBRB Categories: ,

Orton Pyrometric cones are useful in determining when a firing is complete, if the kiln provided enough heat, if there was a temperature difference in the kiln or if a problem occurred during firing. Bars are made from carefully controlled compositions and they bend in a repeatable manner (over a relatively small temperature range- less than 40ºF).


LRB = LARGE – Needs to be supported by a cone plaque or a clay pat.

SRB = SMALL/JUNIOR – 1 1/8″ (2.86 CM) Tall. Small cones are commonly used in the kiln sitter. The tapered shape allows some flexibility to adjust the shut-off temperature by placing the thinner or thicker portion of the cone under the sensing rod. Small cones can also be used as miniature witness cones when space is limited.

SSB = SELF SUPPORTING – 2.5″ (6.35cm) tall Self Supporting cones DO NOT require mounting in cone plaques , holders or pats. These are the easiest cones to use.

BRB = SMALL BAR – Pyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.


There are no reviews yet.

Be the first to review “ORTON – BRB – SMALL PYROMETRIC BARS (50PK)”

This is such a great place if you are a starving artist who is a clay addict! The employees are so helpful and Marcie and Quinn are great! I love how they have their own line of glazes and clays to choose from. I favor their Whitestone stoneware. It is a finely compounded stoneware with a porcelain appearance and feel, great for throwing on the potters wheel... Y'all should visit this store if you love exceptional quality materials and customer service. Five stars all day!

Cameron B. Gig Harbor, WA