duminică, 9 septembrie 2012

Making a Tunnel Cover

Since the tunnel is planned to be about 1m long, it will have to have visiting holes, in case trains derail or the line needs inspection from time to time. This means that the land above the line will have to be flexible. In photo to the right I've experimented with some 6,5 mm summer Silflor grass applied on the fixed terran and the same grass and several Silflor weeds glued to the cover.
  I've discovered these weeks 2 things that make things better and faster: 1) applying the brown latex paint in 2 layers has been thrown out of the standard procedure for applying the earth formula - simply applying the earth on top of the wet plaster cloth (previously hardened), in 2 layers, provides excellent results, with nearly none of the colored plaster becoming loose, as was the case before with the paint; 2) the formula for the white glue used for applying the static grass has now changed - from the old 1:1 Noch glue to water to 1:2 Noch glue:water. The old formula would result in visible stains at the zone's border, now they're much more subtle.

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