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Conventional wisdom has you digging a trench 6 inches wide and 3 inches deep and filling it with ballast. On top of that, you lay the track.
After getting 4 bags of crushed granite (80 pounds each!), I figured there had to be a better way.
First, I leveled the track. I ran the train quite a bit to make sure it could make all of the grades.
I then cut roofing material a bit wider than the track and placed this directly on the ground.
On top of this, I put 3/4 inch foam insulation - cut to about track width. It was PINK, so I ended up painting it gray - in case if would ever show!
Once that was done, I put down the crushed granite. 320 pounds was just enough for the entire layout.
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