Nylon (PA6 / PA12) prints at about 265 °C with a 80 °C bed and 0% part cooling. Usable range 245–285 °C nozzle, 60–100 °C bed. Needs an enclosure.
PolyamidePA
Starting settings
Nozzle
245–285 °C (start 265)
Bed
60–100 °C (start 80)
Part fan
0–20% (start 0%)
Wall speed
25–45 mm/s
Max volumetric flow
8 mm³/s
Shrinkage
1.5%
Softens at
60 °C
Enclosure
Required
Nozzle size
0.4 mm or larger — 0.6 mm recommended
Nozzle material
Brass is fine
Drying
80 °C for 12 h, and print straight from the dryer
Speed
Slower than PLA, 25–45 mm/s, and slower still on the first layer. Nylon needs time to bond, and a rushed first layer curls off a plate it was never going to hold on to.
Bed surface
Garolite (G10) is the classic answer. PEI with a glue-stick layer also works — nylon bonds aggressively to bare PEI.
Nozzle
0.6 mm gives more consistent results. Filled nylon variants also require hardened steel.
What bites people
The most hygroscopic common filament by a wide margin. Almost every "nylon prints terribly" report is wet filament.
Shrinks around 1.5% — by far the worst of the common materials. Dimensional parts need compensation.
Parts keep absorbing moisture after printing and get tougher and slightly larger over days. That is normal.
Safety
Nozzle above 245 °C. Emissions are less studied than ABS — ventilate anyway.
Glass-filled and carbon-filled nylon variants are abrasive and require a hardened nozzle.