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Home / All Products / Casting Plaster

Casting Plaster

Plasters used for architectural castings, small craft castings etc.

May
Bank Holiday
05/05/2025

We will be closed for the May Monday Bank Holiday.

We will reopen as normal on Tuesday 06/05/2025.

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Crystacal R Casting Plaster
€5.60 – €46.25 ex. VAT Select options This product has multiple variants. The options may be chosen on the product page

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Product Categories

Additives and Solvents
Cleaning solvents such as Acetone and Isopropyl Alcohol
Adhesives
Epoxy, urethane and silicone adhesives for hundreds of bonding and repair applications.
Ancillary Tools, Kits and Equipment
Ancillary Products For Mould Making and Casting
- Brushes
- Health and Safety PPE
  Health and Safety Equipment, PPE for using while working with hazardous materials
- Laminating Rollers
- Measuring and Mixing
Art Resin
A range of clear art resins and clear casting resins which can be used to create unique resin art, jewellery and resin river tables. Our clear resins are suitable for coating artwork, creating stunning pigmented resin art and creating amazing resin river tables, also known as resin live edge tables.
Casting Plaster
Plasters used for architectural castings, small craft castings etc.
Core Materials
Epoxy and Urethane Coatings
Rigid epoxy coatings are brushed on to protect 3D prints, rigid foams and other surfaces. Flexible UreCoat™ urethane coating will bond to many surfaces and can be used as a flexible coating for expanded polystyrene (EPS foam), fabric, some metals and plastics, wood, rope (make vines for zoo exhibits) and more. Colors and/or fillers can be added for an infinite variety of effects.
Epoxy Putties
Epoxy Putties are used for a variety of fabrication or sculpting applications and are available as rigid or semi-rigid. With several to choose from, these are easy to use “mix-and-apply by hand” systems. High-density epoxy putties can be textured and stamped to make artificial tree bark, vines, aquarium-safe coral pieces or flame-rated themed elements. Low-density putty is used for reinforcement, making lightweight elements and filleting for composite applications. Epoxy sculpting putty allows the user to sculpt fine detail with precision to create lasting works of art.
Epoxy Resin
Epoxy resins are used for a variety of industrial and art applications. They are a different class of resin chemistry and are generally stronger than other resins, offering superior physical and performance properties including higher heat resistance. Casting resins are used for making impact tooling or fixtures and are also used for encapsulating and potting applications. Laminating resins are used with glass fiber and other reinforcements to create indestructible lightweight parts for composite applications.
- Casting Epoxy
  Epoxy resins for casting applications such as jewellery, river tables, models etc.
- Laminating Epoxy
  Epoxy Resin systems for Laminating applications
Fibre Matting, Cloth and Tape
Glassfibre chopped strand matting, woven cloth, carbon fibre and hemp cloth.
- Glassfibre / Fibreglass Tapes
  Glassfibre Tape for repairs
- Woven Cloth
  Woven cloth for using with polyester and epoxy resins as part of a composite system.
Fibreglass Roofing Materials
Materials for fibreglass roofing.
Resin, matting, topcoat, catalyst, tools and trims.
Filler Powders For Resins
Fillers are often added to casting resins to change the properties of the plastic, lower the weight or achieve a variety of finishes including metal, stone, porcelain, marble, wood, etc.
- Metal Filler Powders
  Metal filler powders for creating cold-casting metallic effects
Glassfibre Kits – Repair and Create
A selection of pre-assembled kits to provide you with everything needed to complete a repair job, or a more ambitious fibreglass product.
Jesmonite Range
Jesmonite’s products are composite materials, a combination of a reactive material base and a pure water based acrylic resin.

Jesmonite is the ultimate chameleon material of the building industry, it can be used to replicate the appearance and texture of any surface finish in any number of colours.

The combination of natural raw materials with a special blend of water based pure acrylic polymers create a unique family of materials that have a number of product benefits that make Jesmonite superior to other building materials.
Latex Rubber
Latex Dipping Rubber for creating low-cost moulds of polyester resin, plaster and other cold cure materials.
Lifecasting Materials
Easy to use alginates are quick and economical; good for making single use molds of the hands, face, etc. Skin safe silicones are used to make lasting molds used over and over for casting resins, wax and more.
Expanding Foams – Urethane and Silicone
Mix and pour, high quality urethane and silicone foams are fast curing and used for industrial, military and art related applications. Foams expand many times original volume. Available in different densities, they are versatile and easy-to-use, they can be colored with Smooth-On tints and pigments.
Moulding and Sculpting Clay
Sulfur-free clays for modelling and moulding applications.
Pigments for Resins and Rubbers
Pigments for urethanes, silicones, polyester and epoxy resins
Polyester Resin, Gelcoat and Topcoat
Polyester resins for laminating, casting, gelcoats and topcoats.
For boat building, repairs, mould making and fibreglass roofing.
Catalyst/Hardener is also available below
- Catalyst
  Catalyst for polyester resin systems.
- Polyester Gelcoat
  Gelcoats are used in moulding applications. If used as an external finish in a repair it will cure with a tacky surface, attracting dirt and dust.
- Polyester Topcoat
  Topcoat / Flowcoat is used in coating a cured fibreglass laminate. Cures to a dull matte finish.
Release Agents and Sealers
A full line of sealers and release agents that are compatible with rubbers, plastics and foams. Using the right sealer and release agent can be the difference between project success and failure.
Resin Bound Driveways
RTV Silicone Rubber
Silicone rubbers for all your mould making needs. Tin Cure and Platinum Cure silicones available for a range of different uses.
Skin Safe Materials
Skin safe silicone can be modified to create silicone gel for encapsulated appliances. Encapsulated appliances can be adhered to the skin, and edges can be melted away. Silicones are also available which can also applied directly to the skin for making hyper-realistic knife slashes, burns, bullet holes and other gore in minutes. Use with versatile blood kit to complete the effect.
Smooth-On Range
The Smooth-On range of products.
Mind Blowing Materials for A World of Applications®
Starter Kits
Looking to try something new? Check out our kits to jump-start your next hobby.
Urethane / Polyurethane Resin
A wide variety of liquid plastic casting resins used for hundreds of different applications. Good for industrial, art-related and hobbyist projects, they are available as rigid or semi-rigid resins. These polyurethane casting plastics are used for making detailed models & prototypes, props and industrial parts. Colors and/or fillers can be added for an infinite variety of casting effects.
Urethane / Polyurethane Rubber
Easy to use and exhibiting good wear resistance, polyurethane mold rubber can be poured, brushed on or sprayed onto prepared surfaces and cure with negligible shrinkage. Urethane mold rubbers are economical, reproduce exceptional detail and are best suited for production casting of concrete, gypsum and wax.
Vinyl Ester Resin

Applications

Aquariums, Zoos and Themed Environments
Fabrication of displays used in theme parks, zoos, aquariums and more.
Architectural Restoration
Techniques used to restore old or create new architectural elements.
Art and Jewellery
Create beautiful artworks, coat them for a long-lasting finish, and make amazing jewellery with stunning effects.
Boat Building and Repairs
Materials useful for sprucing up, fixing a scratch or even doing a complete repair.
Candle Making
Urethane and silicone mold rubber is used for candle making
Concrete Mould Making and Casting
Make concrete molds for wet casting, form liners, concrete stamps, and GFRC decorative structures and panels.
Cosplay
Materials for Cosplay applications
Encapsulation
Create displays for retail, theatrical, or even home usage as well as tutorials for solar cell encapsulation.
Fibreglass Roofing
Fibreglass / glassfibre reinforced plastics are a highly reliable, long-lasting flat roof solution. Find all the materials, equipment and tips you need to successfully install a fibreglass roof here.
Food Applications
Make a custom candy or ice mold, even personalized chocolate, fondant or cake molds.
Home Crafts and Hobbies
Projects you can do at home for fun, school, or home repairs.
Industrial
Make repairs, recreate parts, or make your own custom parts for prototype or production applications.
Landscaping
Materials for landscaping applications, resin bound driveways, G4 concrete pond sealer.
Lifecasting
Capture and reproduce detail from the human body safely and accurately.
Makeup FX
Techniques for professional quality makeup effects for film, TV, theater and more.
Medical Simulation & Orthotics/Prosthetics
Make your own medical training aids or variety of custom and stock Prosthetics and Orthotics.
Model Making
Make molds that capture very fine detail down to a “finger-print” to make exact reproductions.
Mould Making and Casting
Find the things you need to create detailed reproductions of anything and everything!
Propmaking & Special Effects
Make breakaway glass, realistic props and other special effects.
Prototyping & Inventing
Techniques for developing your idea into a three dimensional physical representation.
Sculpture & Art Casting
Create, or make accurate reproductions of original sculpture and art displays.
Sprayable Materials
Applications using sprayable materials and equipment.
Taxidermy
Rubbers, plastics, foams, pigments, etc. for realistically reproducing wildlife.
Vacuum Bagging
Using silicone to create reusable vacuum bags for resin composite applications.
Woodworking
Mold rubbers and casting materials used to create unique forms of art from natural wood. River tables, wood-turning, pen blanks and more.

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Rosehill Industrial Estate, Ballinacurra, Midleton, Co. Cork, Ireland, P25 DH26

Email: info@grs.ie
Phone: 00 353 21 4631711

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