Tungsten Boat- Al2O3 barrier, 1/4" x 3/4" trough
3-1/4" L x 1/2" W (82.5 x 12.7mm), trough: 1/4" W x 3/4" L (6.35 x 19.05mm) x 3/32" (2.38mm) deep.
Tungsten thickness: 0.010" (0.25mm)
Al2O3 = 0.010" (0.25mm) coating
Settings: 0.95V/136A/129W for 1200°C