Nachoman's summer 2010 enginehouse challenge.

[nachoman]

Hey, Nachos Hombre! Is that OSB that you use for sub roadbed? Do you find that strong enough? Do you have any problems with it when you introduce water, like when you are doing a bit of scenicking? :?: :?:

And Scubadude ... we used to say ... a good designer steals with both hands!

Yep. OSB. I am using it because I got it for free as scraps from my dad's house framing. I find it plenty strong enough, but it does swell some when ballasting. So, I use latex paint to paint all exposed OSB before ballasting. That is a good idea no matter what you are using for a layout - because you don't want the plywood or blue/pink foam to show through, either. My preference would be exterior plywood, but that can be expensive.