The props and raw materials needed for making the sand table model
Sand table frame, pedestal, fine sand, soil, ground model, various colored paper (cloth) strips representing roads and rivers, sawdust rendering color of terrain and landforms, paint, soldiers chess representing combat operations, team flags and team numbers, indicating residential areas , Cards for the names of highlands and rivers, and props (signs), ropes, pins, rice rulers, soft pens, shovel and other props.
Method / Step
1, set up sand table
First place the sandbox frame securely, as far as possible to make the sandbox direction consistent with the current location, then lay 3-5cm thick sand with moderate humidity and dry, and scrape it tightly with a wooden board to make the plane of the min contour, then Add the grid opposite to the geological map, and note the relative code around the sandbox frame.
2, sand table model making needs to distinguish topography
(1) The sand table model must be made according to the grid to select the min contour line on the geological map, the contour line that can manipulate the basic shape of the topography, and the peak, saddle, mountain, skew transition point and river Draw the position on the sand table.
(2) For the sand table model, the measured peaks, saddles, downhills, skew transition points, and river bends should be marked with significant fluctuations and points, and the sign should be inserted. The height above the thickness of the bottom layer of sand.
(3) In the range specified by the min contour, the sand table model needs to be based on the sign and contour, and the outline of the peak, saddle, mountain back, etc. should be piled up as the backbone, and then adjusted. Other parts. If the sand table is relatively large, the area can be distinguished, first distinguish the difficulty in and out, and then distinguish the convenience in and out. When distinguishing, it should correspond to the geological map in real time to accurately show the current situation of the fluctuation of the terrain and the sand Press tightly to avoid collapse and deformation. If there are relatively large rivers, rivers and lakes, they should be dug together when adjusting the topography. After the distinction is completed, all-round inspection and adjustment should be made, and the ground color should be sprinkled from high to low. Match the sawdust (or spray it with color).
3, sand table model making need to set features
The objects on the sand table, such as houses, railways, bridges, trees, and independent objects, are mostly represented by similar models. Highways and rural roads are of different widths and widths, and are represented by different colors of paper (cloth strips); rivers are blue paper Strips or sawdust representatives; forests are represented by small branches or green sawdust. The size of the features should be adapted to the horizontal scale, and the relationship position needs to be accurate. The features should be set according to the water system, residential areas, roads, woods and independent features Set up in sequence, inserting place names, river names, mountain names, elevation notes and other cards in relative positions