Nylon PA6
Diameter 1.75mm2 ±0.03
Density 1.252 ±0.05g/cm2
Print Temp 230-260ºC
Hot bed 70-90ºC (required)
Surface Glue Stick, PEI, Kapton Tape and Hairspray is also known to work.

If you do not have air-tight containers for storing your filament, you can dry the spools just before use by running them through a Food Dehydrator. A few hours in this device will dry the filament significantly.
Nylon makes a good filament for cleaning your nozzle. You can use a technique called “cold pulling” where you allow the Nylon to bond to debris within the nozzle, and then after it partially cools, you pull the filament (and debris) out of the hotend.

Nylon (a.k.a. Polyamide) is a popular material in the plastics industry, known for its toughness and flexibility. Nylon filaments typically require extruder temperatures near 250 ºC. Many printers do not include a hotend that can safely reach 250ºC, so you might need to upgrade your hotend before you can use this product. One big challenge with Nylon filaments is that they are hygroscopic, which means they readily absorb moisture from their surroundings. Printing Nylon after it has absorbed moisture will lead to several print quality issues, thus filament storage becomes very important and requires special attention.