So it never actually occurred to me that different size nozzles were an option...I assumed that was a function of printer design. Can the R1+ support different size nozzles other then .4mm and if so, what is the advantage of choosing different sizes? Is that what governs printing resolution? I assume that smaller nozzle size also means slower print times, right? Does a .8mm nozzle mean faster print speeds but poorer resolution? Side question: other than resiliency, is there an advantage to hardened nozzles?