Since you mention the TAZ 6, Lulzbot prints all TAZ parts in ABS.PLA is fine in most cases, however you just have to remember not to leave the printer in your car on a hot day.The components for the Pulse are printed from our Ryno filament, which is a copolyester (same family as PETG). It is about as easy to print as PLA, but has better resistance to heat.