Portland Gray Rod - Glass Alchemy - Borosilicate Glass

Color Rod is approximately 20 Inches in length and 7mm in diameter.

Rods shipped internationally may be cut in half to reduce shipping costs.

Portland Gray, 9992 was developed to fill a hole in the borosilicate palette. There were no gray rods available and the pre-forms went almost white... how could you make a believable shark? So we made the first opaque gray; we chose neutral #5 on the gray scale as a starting point.

Working Tip: Per-heat in outer flame.  Avoid rapid heating.