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Here's a layout I've been following: https://www.youtube.com/@rcgrabbag

Easily highlights the issues in messages here, takes room, time and money to do this.

Yup, been following this build as well. There are plenty of other decent layouts that can be built in a shed, half a room etc.

A different aspect is the shunting layout, this guy's channel is amazing. https://www.youtube.com/@boomerdioramas