622005 TAG Black Jack COE 33 Borosilicate Trautman Art Glass Rod

Black Jack goes almost clear when hot, but self-strikes back through brown to near-black depending on how thick you use it. Black Jack likes an oxidizing flame, but does not reduce with gray streaks like most black boro colors. In the curls shown here, we had to get the glass right on top of the light to see the brown where it’s thinner. Black Jack is not suitable for thin stringer work where you want the stringers to look like a dense black, but it’s the perfect color for very specific things, like sculpting without the graying.

Size: Diameter 5-7mm, length 20", weight per rod .07 lb, approximately 12-15 rods per pound. There is a quarter pound minimum per color. All TAG rods are first quality.
ATTENTION: Due to the weight and length of the rods you may receive .30 pound vs .25 pound (as an example) when ordering. This will cause the cost to rise and the amount you expect to pay for your glass may change.

If this is a problem, please let us know and we will “underweigh” your glass. This means instead of .25 pound you may receive .20 to .22 pound. Please be aware that it is almost impossible to pull exactly .25 pound. We will always try our best to get as close as possible to the weight that is ordered, but due to the factors stated, these weights may substantially increase the total cost of your order.