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I certainly would not use "Sundeala" type board by themselves.
In a previous layout, I used that type of board glued to a 12mm / 1/2" chipboard/MDF which was supported every 15".
Three reasons why-
Allows for point rodding to slide switches to be below the surface.
Allows for variations in scenery base.
All of my track at the time was handlaid - 4 spikes at every 2nd sleeper - it was easy to spike thru balsa sleeper, 1/16th cork base then into baseboard.
If you must use it, support in very well, not on just framing every 12" but on top of other boards.
Ok, it costs more & take time but the hobby is not a "fast food" hobby .
In a previous layout, I used that type of board glued to a 12mm / 1/2" chipboard/MDF which was supported every 15".
Three reasons why-
Allows for point rodding to slide switches to be below the surface.
Allows for variations in scenery base.
All of my track at the time was handlaid - 4 spikes at every 2nd sleeper - it was easy to spike thru balsa sleeper, 1/16th cork base then into baseboard.
If you must use it, support in very well, not on just framing every 12" but on top of other boards.
Ok, it costs more & take time but the hobby is not a "fast food" hobby .
