Who has made their own ground foam?

[nachoman]

I have some scraps off foam rubber left over from recovering the seats in my car. Before I chuck them, I thought I would consider making my own ground foam. I have read about people doing it so I know it works, but what I really want to know is if it is worth the effort.

My layout is small (4x8) and will have semi-desert scenery. Plus, much of the layout will be taken up town/industry. I would estimate that i would only need about 3-4 bags of WS ground foam for the whole layout. Obviously, making my own ground foam wouldn't save me much money.

Are there any other advantages to making your own ground foam besides cost savings? Does it look better?