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August 10, 2007, Newsletter Issue #253: 3-D Casting and Tooling
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Tip of the Week
3-D Casting and Tooling
Moulding Plaster (Casting Plaster) - Often referred to as "casting plaster," moulding plaster is a good general purpose plaster where expansion control, hardness and strength are not of major importance.
White Art Plaster - Similar in working properties to Casting Plaster but with a surface hardening agent that reduces paint absorption.
Tuf Cal Plaster - A unique polymer-modified high early-strength fibered plaster. Provides higher green strength and greater chip and impact resistance than White Art or White Hydrocal. Ideal for hollow cast products.
Drystone - A fast setting gypsum cement that provides strong, durable casts without the need to dry the cast pieces. Drystone offers an environmentally sound alternative to resin-based products and casts with reduced breakage compared to conventional plaster and gypsum cement.
Fast Cast - Exterior gypsum cement. Fast setting cement formulated for exterior decorative statuary that can offer increased casting production for more than 300% versus regular Portland cement. Must be used with sand aggregate.
Gardencast - Designed for decorative outdoor statuary. It features low absorption, high strength and efficient casting characteristics.
Hydrocal White - A basic hydrocal gypsum cement used for statuary, glass casting and model making. It can be carved or added to.
Hydrostone - Used extensively for very durable statuary and 3-D casting. Especially suitable where high strength and resistance to water absorption are necessary. Also used for ram press molds.
Ultracal - A low absorption gypsum cement for case molds. Specially made for close tolerance tooling. Provides the greatest hardness, accuracy and freedom from efflorescence of any gypsum cement on the market.
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