I had a random thought. When I start a new layout thsi fall I plan on haveing some cardboard subterrian hills, maybe with track goign through. My only thought on that is when you take a peice of plaster clothe, dip in water, and lay it in the cardboard, will it drip underneith and possably mess up the tracks?
Get some of the Blue masking tape and cover your tracks. Then you will be able to remove the mess easily. Bob
First - Place a plastic trash bag over the area where you want to place the plaster clothe ... either underneath or over the top of the cardboard. Doesn't matter as long as you protect the track.