These nozzles are used with the Volcano block and packs to print at large layer heights and extremely high flow rates.
E3D Volcano nozzles are super-fast printing nozzles for use with the Volcano block and packs to print large layer heights at extremely high flow rates. Volcano nozzles have extra-long heated melt zones for ultimate filament melt speeds. E3D have also carefully crafted the internal geometry to optimise flow and throughput, as well as ensuring the nozzle tip is appropriately sized for flattening down extra wide printed traces.
E3D nozzles are easily identified by the numbers of dots drilled into the nozzle hex flats (see table).