Of the four shades of cobalt blue Northstar produces, this ranks as the
second lightest. NS-01 is well suited for small blown work, as well as
sculpture when a medium transparent blue is desired. NS-01 Cobalt Blue
can take a lot of heat and can be worked in a wide range of flame
settings. Though the color is extremely intense, be sure to stay out of
reducing flames to prevent any dulling or graying. For additional
information about working NS-01 Cobalt Blue or other cobalt blues refer
to Northstar Newsletter issue 16.
Odd quality glass is first quality glass that is out of round, thinner/thicker than normal, has a taper, varies in diameter, and/or not full length.
Second quality glass can have the properties of odd quality glass, but may also have small stones, air bubbles, vary in tone/shade, or the shape can be very out of round. Both odd and second quality glass can provide a great value to the right person.