Northstar Glassworks Borocolour Colored Rods & Frit Northstar Borocolour has a COE of 33 and may be
with Simax, Northstar and any other glass with a similar
of thermal expansion.
Northstar Glassworks Borocolour
Rods are an average length of 18" with a
of 5-9 mm diameters. Northstar Rods are
sold by the pound with a 1/4 pound minimum purchase per color. Northstar Borocolour frits are also available. Size Large frit is coarse; approximately .055 inches or 1.397 mm. Size Small frit is finer, approximately .024 inches or .6096 mm. Frits are packaged in a 4 oz. bottle.