I print nylon almost exclusively. Once you get good at printing it, you won't want to print anything else... except for polycarbonate, but that shit is temperamental as fuck!!! - Get an all metal hotend. - Titanium throat if you can find one. - Hardened steel volcano nozzle (whatever size you like). - Stacked Maxiwatt cylindrical heater core. - Add a remote double geared direct drive extrusion system for perfect feeding (does not add too much inertial weight). - Build an enclosure for the printer with a temperature controlled heater. Do all of this, and you've reached advanced level.