Hey CSXfan
How's it?
the blue styrofoam is made by DOW...may be the most available..it is the Only one available in my County in No. Ca.
Whatever you do, don't use ext.construction grade foam insulation. the stuff with the foil backing, yellow/tan color.Makes a terrible mess...bad dust, awful smell.
After you buy the foam ( I suggest a piece of each thickness..it comes in 2'x8' pieces, 1",1 1/ 2", 3" thickness..or if you just want low rolling hills...1' would do), decide where you want your hills.
Using a utility knife, hack saw blade, fine tooth saw( or hot wire cutter if you have one...no crumbles to vaccumm up after))Cut a piece the right size for the base. Using styro foam compatible liguid nails(or the adhesive mentioned below*), glue it down to your sub-roadbed(or plywood, if that's what your layout is on) .Cut another piece just slightly smaller than the first, glue it to the first piece...just like a layer cake.. and so on 'til you have the height you want. * There is a foam insulation adhesive, comes in a tube, like caulk...works great...will adhere to plywood, glass, metal as well as foam to foam...but make sure you are well ventilated, both during work and for 6-8 hours after. (I have some left over...in the basement at our office building...I'll check the brand and post it here tonight or tomorrow)
Once the 'glue' is dry...next day...shape as desired...a rasp will help, razer blades...whatever ...Then, use thin layers of interior spackling paste, plaster, wall joint compound etc. to finish off the surfaces before adding scenic details...paint(acrylic...inexpensive artist colors, thinned with water work fine, if you don't airbrush)trees, brush, rocks,etc.
Hope this helps.
VGN
