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2. Full-mold casting - Wikipedia

   en.wikipedia.org/wiki/Full-mold_casting

   The minimum wall thickness for a full-mold casting is 2.5 mm (0.10 in). Typical dimensional tolerances are 0.3% and typical surface finishes are from 2.5 to 25 μm (100 to 1000 millionths of an inch) RMS.

3. Molding (decorative) - Wikipedia

   en.wikipedia.org/wiki/Molding_(decorative)

   Cove moulding or coving: Concave-profile moulding that is used at the junction of an interior wall and ceiling; Crown moulding: Wide, sprung moulding that is used at the junction of an interior wall and ceiling. General term for any moulding at the top or "crowning" an architectural element.

4. Polystyrene - Wikipedia

   en.wikipedia.org/wiki/Polystyrene

   If polystyrene is properly incinerated at high temperatures (up to 1000 °C [102]) and with plenty of air [102] (14 m 3 /kg [citation needed]), the chemicals generated are water, carbon dioxide, and possibly small amounts of residual halogen-compounds from flame-retardants. [102]

5. Sprue (manufacturing) - Wikipedia

   en.wikipedia.org/wiki/Sprue_(manufacturing)

   In injection molding, sprue refers to the passage through which a liquid material (such as polystyrene or polyvinyl chloride) flows into a die, where the material solidifies to form parts. Sprue also refers to the material that solidifies in these passages, forming a framework that attaches the parts in a roughly planar arrangement.

6. Lost-foam casting - Wikipedia

   en.wikipedia.org/wiki/Lost-foam_casting

   The final pattern is approximately 97.5% air and 2.5% polystyrene. Pre-made pouring basins, runners, and risers can be hot glued to the pattern to finish it. [1] The foam pattern does not need to be coated with investment if high detail is not needed, simply putting the foam pattern in a box, filling with sand and vibrating will do.

7. Compression molding - Wikipedia

   en.wikipedia.org/wiki/Compression_molding

   Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while heat and pressure are maintained until the molding material has cured; this process is known as compression molding ...