I have had a concrete version of railway ducting for a while but have been meaning to do a more modern version for a while. Found this commonly used version on the internet to copy https://www.cubis-systems.com/uk/products/cable-protection/cable-trough/railduct/

I have designed them to sit next to each other without the interlocking part, at scale this wouldn’t work and wouldn’t be seen. I have included a T Junction, Y Junction, and 45 degree section. The straight sections can be printed as single units or 2, 5, and 10 together. The straight section is about 1000x455x300 in real life and at OO scale of 13.1mm x 6mm x 4mm.

In real life, this style of ducting is being used instead of the older concrete ducting as it is lighter and easier to install. It can also be used as a walkway.

These items have 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).

The examples in the pictures were printed on an AnyCubic Proton M3 3D resin printer.I recommend printing these on a 3D resin printer to get the best print definition. As per 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