Domed 3cm disc-shaped glass with no dust or sharp edges. 

Purpose made to meet the official "Crystalline" Glass regulations of oxide content, refractive index and density.

Designed to work with blowing coloured glasses - such as Kugler and Gaffer at approx 99/100 COE 25-400oC (95/96 if using to 0-300oC temperature comparative range). Please note that Reichenbach has a lower expansion stated at 92 to 96 COE 25-400oC

A general guide is to charge at 1250-1280oC, and refine/melt at 1165oC until morning

Working temperature 1000oC+

Density 2.596 kg/m3  Brightness Index 1,5316

Annealing 490-505oC for 90 minutes, 40oC per hour to 375oC, then 80oC to room temperature for typical thickness

Oval shaped pre-melted glass with no dust or sharp edges. 

Designed to work with Kugler, Gaffer and Reichenbach having an expansion at 96COE 25-400oC halfway between the COE of the different colour manufacturers

A general guide is to charge at 1180oC in thirds allowing each charge to melt in for 30 minutes before adding the next charge. Refine/melt at 1120oC until morning

Working temperature 1000oC+

Density 2.5095 kg/m3

Annealing 510-515oC for 30-90 minutes, then 17oC per hour to 480oC, 25oC per hour to 180oC, then 40oC to room temperature for typical thickness

Packed in 1000kg bags but can be packed into 25kg bags with sufficient notice and at extra cost. Delivery is on a pallet on a tail lift vehicle. The driver can only lower the pallet and move it a few feet on a totally level surface. 

Typically uses 20/25% less fuel than batch or 10/15% less fuel than pellets.

NO EMMISSIONS - typically 20/22% of batch and pellets goes straight up the chimney! losing you 22% of the weight with possible health and safety issues. 

Nuggets can work out much cheaper overall.