GSW Acrylic Resin Powder 500g
🏛️ Acrylic Resin Powder – Just Add Water
Mix 3:1 with water → pour into mould → demould in 30 min. Non-toxic. No fumes. Ceramic-hard finish.
📦 What You Get
500g resealable pouch of acrylic resin powder – a single-component casting material activated by water. No two-part mixing, no harsh chemicals, no fumes. Produces hard, durable casts with excellent detail capture – tougher than plaster, with a ceramic-like feel. Perfect partner for GSW silicone moulds.
⚡ How to Use
🎯 What's It Good For?
⚔️ Wargaming Terrain
- Floor tiles, paving, flagstones
- Ruins, walls, sci-fi panels
- Industrial grates and pipes
- Pairs with GSW silicone moulds
🎨 Miniature Bases
- Textured round/oval bases
- Sharp brick and stone edges
- Batch casting for armies
- Primes and paints like resin
🚂 Model Railways
- Platform sections and walls
- Roads, kerbs, pathways
- Architectural elements
- Landscape features
🏔️ Dioramas & Scenery
- Rocks, cliffs, boulders
- Building facades
- Props and scatter terrain
- Glueable with CA/super glue
📋 Specifications
| Weight | 500g |
| Type | Single-component acrylic resin powder |
| Mix ratio | 3:1 (powder : water) |
| Demould time | ~30 minutes |
| Full cure | 24 hours |
| Shrinkage | Zero |
| Peak exotherm | ~45-50°C (silicone-safe) |
| Finish | Ceramic-like, semi-matte white |
| Post-cure work | Sand, carve, drill, glue, prime, paint |
| Manufacturer | Green Stuff World (Spain) |
🔀 How Does It Compare?
vs Plaster: Harder, more durable, less brittle, better detail. Handles drops better.
vs Epoxy Resin: No fumes, no two-part chemistry, water-based. Easier cleanup, safer indoors.
✅ Pros
- Single component – just add water
- Non-toxic, no harsh fumes
- Excellent detail capture
- Harder than plaster, ceramic feel
- Fast demould (~30 min)
- Zero shrinkage
- Safe for silicone moulds
⚠️ Keep in Mind
- Thin/long pieces can be fragile – reinforce with wire if needed
- Ratio matters – measure carefully
- Too much water weakens cast
- Full strength needs 24hr cure
💡 Pro Tip
For complex moulds, brush a thin layer of mixed resin into the details first, then pour the rest. Helps prevent air pockets and ensures crisp detail capture.
✓ Safety: Non-toxic, odourless, water-based. No special ventilation required. Age 14+. Wash hands after use. Not for food contact.
🏪 Hobby Heaven – Authorised Green Stuff World Dealer UK



