01-23-2012, 11:02 PM
Between your difficulties with the tunnel portal and the position of the mine, the situation with the pipe is more complex than I had expected. My initial thought was to simply make a tree-covered foam lift-out or lift-away section for access to the pipe. You could have then used a sheet of aluminum to fashion an open-ended cone - the small end to fit around the cleanout opening, and the larger end (3' or 4' in diameter) offering protection to the layout from burly plumbers' bellies (and any spillage from the pipe). To implement this now, though, would require that the mine also be part of the removable section. 
The blower building, or whatever the support structure is for that tunnel, can be made from .060" sheet styrene. If the size warrants it, buy a 4'x8' sheet (it's useful for many projects, and a lot cheaper than in the small packages from Evergreen).
Wayne
The blower building, or whatever the support structure is for that tunnel, can be made from .060" sheet styrene. If the size warrants it, buy a 4'x8' sheet (it's useful for many projects, and a lot cheaper than in the small packages from Evergreen).
Wayne