The Form 3B resin tank is the primary container for holding resin after it is dispensed from the cartridge. Resin is cured onto the build platform when the laser passes through the tank's bottom film. Be sure to handle and maintain the tank properly between each print. Prints with all resins compatible with the Form 3 and Form 3B Features a small V2.1 sticker on the back left of the tank, above the ID chip