Nylon filament is compatible with Julia +.
There is no existing configuration file available with the software for Nylon. Here is a new configuration file for it. Just directly drag and drop it into fracktory.
Also, nylon absorbs moisture so please make sure you keep it in an air tight container.
Print temperature in the attached profile is 240 degree. You can adjust it depend on the nylon which you are using. Nylon printing temperature varies between 230 degree to 240 degree.