Thank you, Chuck, I've added the plan file and a screencapture without scenery to the first post.
@PRR1950 posted:From previous discussions, I know that O27 doesn't fit well within O31, and I'm having trouble believing O31 will fit any better within O36 (primarily where your hidden curves are located).
Please note that each smaller diameter does "actually" fit within the next larger, but you can't run any equipment on both tracks without unexpected "track/train next door" collisions.
I don't have 031 yet but when I loaded the render in the software I had a feeling what you mentioned would be a problem. To fix that, on the left-side of the layout I have added a 5" piece to the horizontal portion of the outer loop that extends beyond where the inner loop begins to curve, and there are are a 1 3/4" piece and a 5" piece vertically between each quarter-turn of 036 track of the outer loop. These are difficult to see in the pictures because of the second level loop, so I am specifically mentioning them here.
