I am in the UK.
I am not sure that I would be expecting to do furniture level of woodwork for a model railway.
I specify a lot of plywood for construction in my job. The problem we have is the assumption that plywood is a cheap solution. I have to make sure that it will do the job it is designed for - ie with the right glues and timbers for the application.
If you scroll down there is a really good article about building applications herehttps://www.ridgeons.co.uk/timber-sheet-materials/plywood
I would assume that the ply in a model railway would be used for the framing and track base as well. I am thinking of using exterior plywood as it may have to last a long time and may go through some changes in temperature in its life.
Does anyone have experience of making ply framing for baseboards?
My name is Geoff - a dabbler in all things narrow gauge and unlikely.