Making Casts of Snow Tracks
ES students have made a number of casts of tracks in the snow using the following procedure. Make a frame around the track with a ring of plastic cut from a large bottle or milk carton. If the track is in wet snow, first sprinkle a little dry plaster into the track, just dusting it. Allow this to dry before pouring the plaster. If the snow is dry and powdery, spray a little water from a misting bottle into the track and allow this to freeze before pouring the plaster. Add plaster to cold water. The plaster should be the consistency of thick cream. It is important to pour the plaster gently in order to avoid distorting the track. If the temperature is below freezing, the cast may freeze before setting. If this happens, remove it and take it indoors. You should leave it in the frame in this case. Once it warms up, it will be soft, so it should not be handled. Set it impression side up and allow it to set.
ES students have made a number of casts of tracks in the snow using the following procedure. Make a frame around the track with a ring of plastic cut from a large bottle or milk carton. If the track is in wet snow, first sprinkle a little dry plaster into the track, just dusting it. Allow this to dry before pouring the plaster. If the snow is dry and powdery, spray a little water from a misting bottle into the track and allow this to freeze before pouring the plaster. Add plaster to cold water. The plaster should be the consistency of thick cream. It is important to pour the plaster gently in order to avoid distorting the track. If the temperature is below freezing, the cast may freeze before setting. If this happens, remove it and take it indoors. You should leave it in the frame in this case. Once it warms up, it will be soft, so it should not be handled. Set it impression side up and allow it to set.