QUOTE: Originally posted by selector Glue it first, Jarrell. It is the 'land', and it is there first. You can then cut down if you want a downward grade, or build up if you want topography and rising grades. Your track plan will take care of itself as you build your topography. Lay out your 'ground-level' track to see how it all fits. Then, try the cardboard grade trick to get a feel for where your hills and other features will be, how tall they'll be, and what shape, with what size footprint over all. Mark the outsides of your ground-level track, all over the layout; you'll have two parallel lines curving here and there, and should meet somewhere with the start of your lines. Those lines ar your prime reference for you as you now begin to cut and stack foam tablets for hills. Where you need to place tablets over the rail lines you drew, you know you also need to build a cut possibly, and certainly a grade there, so shape the tablets accordinly. Us a rasp or surform or wire bru***o get that worked out.