I have my cardboard run, my tracks and layout masked off. A bucket, some paper towels and a ton pf plaster of paris. I’m ready.
How may coats of paper towels will I need?
Quick check to see if you have enough.
Put a lightbulb under the hardshell. Slap an extra layer on any spot that looks bright, and two layers if it’s really bright.
Hardshell materials are among the least expensive things on a model railroad. If in doubt, use more.
Chuck
Like other things, you may get a lot of opinions about this. As long as it’s:
A. Strong enough to support what 's on top of it, and
B. Gives you the desired scenic effect,
I’d say you have enough.
Tom
I don’t put a very thick layer of hardshell at all on mine. Once the hardshell is done, I brush another layer about 1/8" thick. While that layer is still wet, I sift dry plaster on top of it to give the layer some texture. Then, I paint it with thinned acrylic tan paint (water base). Now, it’s ready for ground foam. [:)]
42 [;)]
[:D] (JOKE !)
I got 2-3 layers of P of P and paper and decided I didn’t like the look. I decided to go with drywall mud on top of it. Then I read your post. Good tip about the dry powder. I have some Woodland Scenic rocks to mix in.