The SuperVolcano comes as standard with a Nickel Plated Copper block so that it can safely operate with the matching 80W heater. These blocks are engineered for ultimate high temperature performance. Made from a special high temperature copper-alloy with a softening point of well above 500C (compared to aluminium blocks which begin to lose integrity beyond 350°C), and much-increased thermal conductivity these copper blocks are perfect for high temperature applications while working perfectly with everyday filaments like PLA, ABS and spoolWorks EDGE. In addition to high temperature performance these blocks have an advanced nickel based plating, this plating considerably reduces the adhesion of plastic to the block. This is great for everyday filaments keeping things clean and shiny, but is particularly important at temperatures above 300°C where a silicone sock can't be used.
To aid the thermal performance of the SuperVolcano a piece of high temperature fibreglass sleeving replaces our normal sock, insulating the block and keeping the heat in. This sleeving can withstand continuous operating temperatures of 260°C with the ability to go even higher, however bear in mind that this will reduce the life. If extra redundancy/monitoring of your HotEnd performance is what you you’re after then feel free to add another temperature sensor into the equation (not that it's required).