Hi, I'm now to the Gauge and to model railroading. I've decided on a layout -- I hope to build a custom version of the "scenic and relaxed" layout as marketed by Atlas on a baseboard no larger than 7ft * 3ft. The next step is to construct a baseboard, and I wondered if you guys could advise me and share your experiences with me, please. The key issue is that the board must be portable as I'm going to be working the spare bedroom. I'll need to move the layout out of the way when we have people to stay. Another priority is to be able to cut down easily to form a river bed for example. I've noted that I could use a variety of materials -- plywood, MDF, chipboard, sundeala, foam, however I haven't made any decision as. The combination of foam on plywood seems realistic however if this represents a good solution then are there any members in the UK who can advise me on the availability of suitable foam (grade, etc), please. Thank you in advance -- David.