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2. Plaster mold casting - Wikipedia

   en.wikipedia.org/wiki/Plaster_mold_casting

   Like sand casting, plaster mold casting is an expendable mold process, however it can only be used with non-ferrous materials. It is used for castings as small as 30 g (1 oz) to as large as 7–10 kg (15–22 lb). Generally, the form takes less than a week to prepare. Production rates of 1–10 units/hr can be achieved with plaster molds. [1] [2]

3. Casting - Wikipedia

   en.wikipedia.org/wiki/Casting

   Plaster and other chemical curing materials, such as concrete and plastic resin, may be cast using single-use waste molds as noted above, multiple-use 'piece' molds, or molds made of small rigid pieces or of flexible material such as latex rubber (which is in turn supported by an exterior mold). When casting plaster or concrete, the material ...

4. Resin casting - Wikipedia

   en.wikipedia.org/wiki/Resin_casting

   Specialist equipment can enable closed molds to be filled whilst under vacuum, a process known as resin vacuum casting, where air and gas bubbles are completely removed from the cast part. Pressure and/or centrifugal force can be used to help push the liquid resin into all details of the mold. The mold can also be vibrated to expel bubbles.

5. Rotational molding - Wikipedia

   en.wikipedia.org/wiki/Rotational_molding

   Molds (or tooling) are either fabricated from welded sheet steel or cast. The fabrication method is often driven by part size and complexity; most intricate parts are likely made with cast tooling. Molds are typically manufactured from stainless steel or aluminum. Aluminum molds are usually much thicker than equivalent steel molds, as it is a ...

6. Riser (casting) - Wikipedia

   en.wikipedia.org/wiki/Riser_(casting)

   A bronze casting showing the sprue and risers. A riser, also known as a feeder, [1] is a reservoir built into a metal casting mold to prevent cavities due to shrinkage.Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify.

7. Plaster - Wikipedia

   en.wikipedia.org/wiki/Plaster

   Plaster is also used to invest and flask wax dentures, the wax being subsequently removed by "burning out," and replaced with flowable denture base material. The typically acrylic denture base then cures in the plaster investment mold. Plaster investments can withstand the high heat and pressure needed to ensure a rigid denture base.