This is a single item that could be used with my garden fences that I have done in the past.

https://www.cgtrader.com/3d-print-models/hobby-diy/hobby-accessories/model-railway-wood-panel-fencing-with-wooden-posts-kit-buildhttps://www.cgtrader.com/3d-print-models/hobby-diy/hobby-accessories/model-railway-wood-panel-fencing-with-concrete-posts-kit-build

This item has been designed at OO gauge, 1/76.2 scale.for HO gauge print at 87%, 1/87 scale,for O gauge UK print at 175%, 1/43.5 scale,for O gauge International print at 158%, 1/48 scale,for N Gauge UK print at 51.5%, 1/148 Scale, (Caution: I have not test printed this in N gauge scale).

Tested on a AnyCubic Mono 4 Ultra 14K resin printer

I recommend you print this on a 3D Resin printer so you get the best detail once printed..As normal with my designs, there is a balance between accuracy and printability, hopefully not affecting the look of the model too much.

I use AnyCubic Water Washable Resin for most of my items but use AnyCubic ABS Like Resin for anything that needs to be stronger and tougher.

use this link to join CGTrader and download my designs.

https://www.cgtrader.com/designers/PJD1974?referral_id=3218445