Looking to try nylon, but don't have an all metal hot end?
Taulman 230 may be worth a try.
Print temp = 228C – 235C
Nozzle = any size
Print speed = equivalent to ABS
Retraction = 1mm/.1mm nozzle or for a .5mm nozzle = .5mm
Print bed = Hot = Glass heated to 65C with coat of PVA or geckotek EZ Stik Hot