I needed some track insulators for my LGB style G-Scale layout. However, some were to be temporary, so I didn't want to modify the track segments. I created a custom Male-Female insulator (as well as a standard Female-Female).
These are sized to be firm with new track segments so they should also work with older segments that may be "tweaked" a bit.
Will need to reorient them on the printer bed as shown in example picture.
The author marked this model as their own original creation.