Should I use the Fast Glaze or Slow Glaze or Fast Bisque or Slow Bisque?

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Should I use the Fast Glaze or Slow Glaze or Fast Bisque or Slow Bisque?

When in doubt it is almost always better to fire slower than faster.

A slower firing allows for more time for water vapor, fumes and gasses to escape from the body of the clay body.

A slower firing minimizes the differences in temperature from the inside to the outside or across the surface of a piece of pottery. Bigger differences in temperature in the same piece of pottery can result in cracking or explosing.

The thinner your ware is the faster you can fire; conversely the thicker it is the slower you should fire.

Also - if the standard programs don't work don't be afraid to use the Vary-Fire programs.