Polymeric gypsum is a material created for precise casting and strong colour. Compared to classic gypsum, it has a more stable gypsum setting, making it easier to control colour and texture is repeatable. Correctly selected pigment and proper technique allow achieve a uniform colourbut also create visual effects such as terrazzo or marble. In this guide you will find simple techniquesthat will help you dye gypsum consciously - from the choice of accessories to the finishing touches, with a view to the creation of decorative details in the home handicrafts.
e-cupstone is manufacturer of polymeric gypsum - we focus on a coherent ecosystem: polymeric gypsum, dyes, silicone moulds i impregnates and varnishes.
Why does polymer gypsum like colour?
Polymeric gypsum takes better pigments for plaster than the classic gypsum: it is more fluid, vents faster in the mould and, once cured, produces a hard, even casting. For the creators, this unlimited possibilities for colours and effects - from subtle pastels to intense saturation. This material polymer works well with both powdered additives and liquid pigments.
Staining methods: what to choose?
1) Colouring "in the mass" (purest colour)
It is a method that consists of adding to the mass colouring additives during preparation gypsum mass. First measure amount of gypsum and water (remember to record proportions of gypsum), and then:
- Pouring gypsum into water - always start the mixture with uploading gypsum to water, not the other way around. This way of dosing gypsum and water facilitates control of viscosity and helps avoid lumps.
- Powdered pigments - easy to dose, allows for intense colour coloured plaster. Always mix thoroughly so that no clod has not hit the mould.
- Liquid colouring for plaster - quickly blends with the mass and facilitates shade repeatability.
- Plaster staining This increases process predictability and reduces contamination at the bench.
Use a slow mixer to mix stirrer in pure containeru; it is important to maintain adequate habits: work quietly, so as not to aerate the mass and shorten the time gypsum setting.
2) Dyes and pigments: how to choose?
- Pigment mineral or oxide - durable, UV-resistant, ideal for solid colours.
- Liquid pigments - comfortable, they give even saturation.
- Silk pearlescent dye - A pearlescent effect and delicate play of light. Great for jewellery details and small series.
- Special additions: glitter or small fillers can change the character of a project.
You will find compatible dyes and varnishes and ready-made kits: dyes To polymeric gypsum and finishes with impregnates and varnishes.
3) Colour after casting (dry painting)
After removing from the mould can be used acrylic paints - is a good solution for multicoloured details, stencils or rubbings. Such plaster painting allows for precision and shading, but remember: this is not a substitute for colouring "in the mass" if you want a deep and even section colour.
Step by step: preparation and mixing
- Weigh water and gypsum - save proportions of gypsum and stick to the recipe.
- Pouring gypsum into water - Spread in a thin stream, allow the powder to soak in.
- Adding additives - measure pigment or powdered pigments, you can also add to the water liquid pigments.
- Mix quietly 2-3 minutes; wipe the walls if necessary containera, in order to avoid lumps.
- Check viscosity: with fine details polymeric gypsum should be a little thinner, with large elements a little thicker.
- Pour into the prepared tin.
Tip: when you want to conquer gloss and easy to clean after curing, colour protect lacquer or impregnate tailored to gypsum surfaces - this increases durability and stain resistance.
Terrazzo, marble and other special effects
Lastryko (terrazzo) is a hit in handicrafts and decorations. You will obtain it by two means:
- Prepared "chips" - prepare in advance thin plates of polymeric gypsum (different colours) and after curing, cut into coloured plaster fragments.
- Mineral additives - throw in small pieces of stonegranite or glass, as well as fragments of other material.
Such a method consists of adding to the mass coloured particles, so that the casting exhibits the characteristic of terrazzo distribution of spots and after grinding shows a pattern characteristic of terrazzo. If you prefer streaks instead of irregular dots, you can gently mix two colours just before pouring - a subtle appearance is created marble. This unlimited possibilities and extremely wide unlimited possibilities for personalisation. For a flash, add a touch of glitteru.
Pro tip: light sanding and polishing after pre-curing will bring out the chips and highlight the decorative nature.
Moulds, casting and safety
- Use only pure forms - silicone moulds are flexible and faithfully reproduce the details, and their resilience protects the casting when dismantling.
- Gently tapping while pouring removes bubbles; with thin walls, control the pace as you casting thickness influences the setting and drying time.
- Always keep appropriate precautions: gloves and glasses is standard, especially when working with powders and splashes.
Omould casting draw calmly; with complex shapes, flexibility silicone mould can realistically facilitate removal of the casting without loss of detail.
Choice of colour versus type of mix
Colour and saturation depend on several factors: type of gypsum, the choice of accessories and the way of working. Polymeric gypsum (material polymer) generally gives a stronger colour than regular gypsumand additionally allows for a smooth casting with fewer pores. When staining, always test small samples dry gypsum - You can easily judge the final shade after drying.
Frequently asked questions
Can it be dyed with paint?
Yes - in small quantities paint (e.g. a few drops) can give a pastel look. Remember, however, that excess painty may weaken mix and slow down the process gypsum setting. Once the details have cured, it is great to paint the acrylic paints.
How much additive to use?
Start with 1-3% relative to the weight of the powder and gradually increase. Each polymeric gypsum reacts slightly differently, so testing allows you to select the target shade and control the colouring the mass.
Does colour affect processing?
Usually not, but intense saturation can reduce working time. Quick and clean processing (sanding, polishing) after pre-curing produces the best effect.
Checklist: from recipe to shine
- Plan casting and prepare a position.
- Measure the water and gypsum; note proportions of gypsum.
- Add pigment (powdered or liquid pigments) and only then pour in gypsum to water.
- Mix slowly; avoid aeration.
- Pour into the mould; control casting thickness and curing time.
- After removing from the mould wait until fully dry; only then secure the colour lacquerem/impregnate (matt, satin or gloss).
- If you like experimenting, experiment with crisps and fillers - original series will be created coloured plaster.
Inspiration: when which accessory?
- Large, even plane: 'in-mass' colouring + light grinding.
- Small figurines and jewellery from the polymeric gypsum: pearlescent accents (e.g. silk pearlescent dye).
- Pots, trays, holders: terrazzo effect or marble; add small pieces of stone or chips of gypsumu.
- Glossy accents: micro glitter.
Summary and e-cupstone recommendations
Colouring polymeric gypsum gives enormous freedom: from solid colour to sophisticated compositions terrazzo. The key is clean tools, calm mix, good formulation and sample tests. Remember, too, that the final look is shaped not only by the additives, but also by the quality of the mould and the finish - the right lacquer not only protects, but also brings out the colour.
- Select polymeric gypsum e-cupstone (material polymer) under your casting.
- Select accessories from the dyes (of which powdered pigments and liquid pigments) - easier achieve a uniform colour and control saturation.
- Work in silicone mouldsto faithfully reproduce the detail.
- Finally, protect the colour and texture impregnates and varnishes.
Ready for colour? Take a look at the e-cupstone shop and discover our staining ecosystem: from gypsumu, by dyeright through to the finishing touches. Do you have any questions? Write to us via Contact - advise on the recipe, choice of additives and working method for your projects castingów.
Glossary (for the sake of SEO)
- gypsum staining - the technique of giving colour by colouring the mass or painting;
- pigment/dye - colouring additive for polymeric gypsum;
- paint - the colour after curing (e.g. acrylic paints);
- terrazzo - chip pattern; the casting exhibits the characteristic of terrazzo layout;
- silicone moulds - flexible forms;
- type of gypsum - influences the effect;
- appropriate precautions - Health and safety at work;
- facilitate removal of the casting - separator silicone;
- mould casting - final disassembly without damage.
Attention: This guide is about e-cupstone materials and accessories - selected for polymeric gypsum for maximum repeatability and quality.
