Plaster of paris and perlite are two items used regularly in upper elementary to senior high school in the art classroom. Students learn the principals and techniques used in sculpting inanimate objects. Both plaster of paris and perlite require that plans be initially drawn based on what the sculpture is to look like when it is finished. From the drawing, the proper tools may be chosen. Teachers or parents need to supervise younger students using the tools because they can cause cuts.
Instructions
1. Lightly draw the 2D image on each side of the block to use as a general guideline as to which larger pieces need removed from the sculpture. The student should draw the sculpture on a piece of paper prior to beginning to use as a guideline. The same process will be followed whether using plaster of paris or a perlite block.
2. Use an precision cutting knife, such as an X-acto knife, and begin carving small pieces of the block in the top four corners. Scrape the plaster of paris to take the edges down slowly. Cut away from the body with the knife to prevent cuts. Small carving tools will work for this process if available. The process is long and tedious. Do not carve too quickly or large chunks or chips will occur.
3. Begin removing the finer details with small jewelry files that are available in round, rectangular, triangular, flat and half round shapes. Pull the file over the surface to remove any excess block that is not part of the sculpture. Periodically brush off the sculpture with a paintbrush to remove any dust and debris.
4. Brush the sculpture off with a paintbrush when finished. Add paint or sealer if desired.
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