I made this modular wall for a location where the rails run close to the edge and there was no room for a straight vertical wall. The offset of this wall allows it to sit very close to the tracks, yet clear even the biggest rolling stock. I'm including separate files for the supports and the wall sections as well as a combined support and wall section piece.

Creality

Ender 3

Yes

No

standard

no

I had best results printing the combined pieces vertically with support on the bottom and with skirt for adhesion.