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Heres a bit of a turorial on extruded foam scenery. I found tutorial photos go in order from bottom to top. I will post more as I go.
I know there are many different ways of doing things, but this is the way I have done it and found it VERY easy and gives a great effect.
First off, the following photos are taken on my N scale layout (work in progress). I started with one sheet of 2" x 2' x 8' pink extruded foam board. There are many thicknesses but i wanted to puild up the scenery with as few layers as possible. Keep in mind, the more layers, the more filler you will need (will explain later).
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File comment: Once you are happy with the look after filling the cracks, its time for a basecoat. I just used some brown acrylic house paint with a matte finish. In the photos there is only one coat of the brown. As you can see, you can really see the rock like effect that chipping the foam away gives.
Once a second coat of paint is applied, several acrylic washes of other earth tones will be sprayed on. This will give depth to the rocks creating dark cracks and textures.
More Photos to Come...........
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File comment: Once you hacked the foam to the desired shape, its time to get ready for a basecoat. Fisrtly, you must fill any unwanted gaps caused when gluing the layers together. For this I simply used drywall compound and pushed it in to the cracks with a finger. Also, for added effect along the roadbed I used some of the bits that were pulled out from the foam shaping process and mixed them in to a compound paste mix. I then spread the "rocky" mix along the edges of the road bed and the bases of the mountains to simulate rockfall and debris. Once this is done, you need to take a stiff paint brush and remove any little pieces of foam and debris that may be stuck or hiding in the cracks and such.
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File comment: This photo shows the multiple layers stacked up and glued together.
The easiest way I found to cut your foam to size was to take some old flyers, lay pieces out where you want your foam, traced the shape i wanted, cut it out, placed it on the foam and cut the foam. Doing it this way, I found you could position the paper on the foam so you dont waste any.
To glue the pieces, I used WeldBond, its almost like a thick white glue, worked very well.
Once the glue set overnight, I started hacking at the foam to get some rocky texture. To carve I only used two things. A stiff wire brush to take down some of the corners and a stiff steel ruler. This is your best friend. You can use the corners to pull out the foam which creates outcrops and other rock features. You can also use the corners to dig in cracks and such. The best way to know how the foam behaves is to simply start hacking.
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Last edited by motorcarmike on Wed Feb 04, 2009 12:09 am, edited 1 time in total.
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