You will find different types of qualities for nylon :
Nylon 618 :
Print temperature: 235-265°C Heat bed temperature: 50°C
Nylon 645 :
Print temperature: 230-265°C Heat bed temperature: 50°C
Nylon Bridge :
Print temperature: 235-245°C Heat bed temperature: 50°C
Print temperature: 212-248°C, ideal 235-245°C Heat bed temperature: 50°C
Important Note: With nylon it’s important to dry the spools because it easily absorbs a lot of humidity from the air . It can absorb up to 10% of it’s mass in water in less than 24 hours. To get an optimal print, the filament has to be as dry as possible.
You can dry the nylon by placing it inside a oven with temperatures between 80 to 90°C for 6 to 8heures.Once dry you can store it in a dry storage room with a small dedicated dryer bag.