Foam Board Thickness 1 inch or 2?

[Ed Kapuscinski]

I've used a bunch of 2 inch over the years, but I've realize 1 is they way to go too.

Think about how you have to construct scenic contours. Cutting away a lot of 2 inch is difficult, especially in areas where you need to "scoop" it out. 1 inch lets you work with shallower cuts and stack with more control.

[Bobster]

Greetings all,

I would like to thank all of you for your advice.  I am most likely going to do the base with two one inch sheets for a nice thick base.   It seems most of you favor one inch sheet.  Ed reminded me how much easier it was to work the contours of thinner material.   Yet it was hard to dispute how well Dave's Juniata Division came out using two inch foam.  I hope I can get close to the level I've seem there.  My planned waterfall and its canyon will be quite narrow, similar to several like this at Starved Rock State Park in Illinois, with probably just a trickle of water.
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These sandstone box canyons are about one mile south of the Rock Island tracks at (North) Utica, Illinois.   I'm using artistic license and bringing  one of the water falls North, to the railroad side, of the river.  Who's to say there really isn't a waterfall on the North side of the river, just no park.  Illinois Central and CB&Q were close by and CSX still operates on the track now.   A tornado took out the old brick Rock Island Utica station several years back.

Again, thank you,
Bobster

[DKS]

Greetings all,

I would like to thank all of you for your advice.  I am most likely going to do the base with two one inch sheets for a nice thick base.   It seems most of you favor one inch sheet.  Ed reminded me how much easier it was to work the contours of thinner material.   Yet it was hard to dispute how well Dave's Juniata Division came out using two inch foam.  I hope I can get close to the level I've seem there.  My planned waterfall and its canyon will be quite narrow, similar to several like this at Starved Rock State Park in Illinois, with probably just a trickle of water.
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These sandstone box canyons are about one mile south of the Rock Island tracks at (North) Utica, Illinois.   I'm using artistic license and bringing  one of the water falls North, to the railroad side, of the river.  Who's to say there really isn't a waterfall on the North side of the river, just no park.  Illinois Central and CB&Q were close by and CSX still operates on the track now.   A tornado took out the old brick Rock Island Utica station several years back.

Again, thank you,
Bobster

I've made rock forms just like this using a hot wire tool. I bend the wire into an irregular shape, then wiggle the wire forward and back as I work down the edge of the foam. Then I'll reshape the wire for more random effects. Sorry I have no photos, but it's pretty easy to do.