Nothing here yet. Every maker starts somewhere.
Pick a starter kit with everything for your first cast, or let the beginner guides walk you through it.
Shop the starter kits Read the beginner guides
Eco-creative materials · water-based · no smell
Cast your first Jesmonite® piece this weekend.
A starter kit brings everything in one box: both bottles (liquid and base), 2 pigments, a mould, stirring sticks and a printed manual. Prefer to pick your own? Choose a starter set (liquid + base) and add the pigments and mould you like. Either way: no studio, no extraction, no experience — weigh, mix, pour, demould in 40 minutes.
Official Jesmonite® distributor
Three Jesmonite® lines. Answer one question and we'll pick yours.
Two bottles, water-based, solvent-free and safe on your kitchen table. The only real decision is where your piece will live.
AC100
Indoors
AC84
In & outdoors
AC730
Outdoors & architectural
Official distributorGenuine Jesmonite®, fresh batches
Same-day dispatchOrder before 14:00, shipped the same day
Free shipping from €7514-day returns on unopened items
20+ free guidesWritten by casters, not marketers
Real human supportMix went wrong? Mail us a photo
01 · The material
Two bottles. A scale. That's the whole kit.
Jesmonite® is a water-based composite. You get a bottle of liquid and a bottle of base. Weigh the liquid into your mixing cup, weigh the base into the same cup, stir, and pour into a silicone mould. You demould the same afternoon.
It gives you the weight and matte mineral finish of stone or concrete without solvents, fumes or a workshop. Designers use it for homeware, jewellery and art all the way up to architectural detail — and it takes pigment beautifully, so no two pieces need to look alike.
How to find your mix size: put the empty silicone mould on your scale, press tare, then fill it with water to the brim. That water weight in grams is the number you enter in the calculator.
Good to know before you start
- Base
- Water-based, no solvents
- Smell & fumes
- None
- Where you work
- Indoors, on a table
- Demould
- 30 min – 4 h, per line
- Clean-up
- Warm water and soap, or Jesmo Clean
- Finish
- Matte, glossy, stone-like
- Colour
- Water-based pigments
- Once sealed
- Waterproof, stain-resistant
02 · The look
Pick the finish you're after
Same base material, four completely different results. Choose one and we'll list exactly what goes in the basket.
Terrazzo
Chips suspended in a coloured base — the signature Jesmonite® look. You sand the cured piece back to bring the speckle to the surface, so many makers try a solid colour or a marble first and come to terrazzo once they're comfortable. Terrazzo is AC100 only.
How to make the terrazzo effect →Shop the supplies
Marble swirl
One pigment or several, folded through just once so the veins stay defined — no two pieces are ever the same, a beautiful unique effect. Marbling looks far more advanced than it is; the only trick is don't over-mix. How you add the colour depends on the colourant:
- Liquid pigments: a few drops straight into the mix, then swirl through with a stirring stick just two or three times — the less you stir, the more defined the veins.
- Neon pigments (powder): mix a small separate batch in the neon colour first, then fold it through your base mix a couple of times before pouring.
- Mica powders: stir the mica into a little Jesmonite® liquid first to a smooth paste, then swirl that through your mix.
Pour and let the veins settle. For a swirl finish, drizzle two or three colours into the mould in ribbons and give one gentle twist. Every pour is a little different — that's the charm.
What you need
How to colour & marble Jesmonite® →Shop the supplies
Solid colour
One pigment, evenly mixed. The calmest, most contemporary result and the easiest to repeat across a set of coasters or vases.
How to colour Jesmonite® →Shop the supplies
Concrete / etched
Cast in AC84 or AC730, then etch with acid or vinegar for a raw, quarried surface. Weather-resistant, so it can go outdoors.
Which outdoor line: AC84 vs AC730 →Shop the supplies
03 · The choice
AC100 vs AC84 vs AC730
One question decides it: where will the piece live, and how experienced are you?
Read the full AC100 vs AC84 vs AC730 guide →
Best for beginners
Indoor · beginner
AC100
Indoor decorative objects and home accessories. The most popular line, and the one nearly every guide is written for.
- UseIndoor only
- Liquid : base1 : 2,5 by weight
- Demould30–40 min
- FinishSmooth from mould
- ColourAll pigments, mixable
- EffectsSolid colour, marbled, terrazzo
- SealerAcrylic gloss / satin
- SkillBeginner
Most versatile
In & outdoor
AC84
Small objects for indoors and out. Smooth straight from the mould like AC100, or etched with vinegar or acid for a concrete look.
- UseIndoor + outdoor
- Liquid : base1 : 5 by weight
- Demould2 hours
- FinishSmooth or acid-etched
- ColourAll pigments, mixable
- EffectsSmooth or etched
- SealerAcrylic, Penetrating, Flexiguard
- SkillBeginner+
Strongest / architectural
Outdoor · advanced
AC730
Cement-based and stone-like, for durable outdoor pieces and architectural detail. Thicker mix — not a first project.
- UseIndoor + outdoor
- Liquid : base1 : 5 by weight
- Demould4 hours
- FinishSmooth or acid-etched
- ColourPre-mixed colours
- EffectsStone, concrete
- SealerPenetrating, Flexiguard
- SkillExperienced
04 · The maths
How much do I need? The Jesmonite® calculator
Enter your mould’s water weight and get the exact Jesmonite® liquid and base to mix. Only have a set amount of liquid or base? Type that instead — the other fields fill in automatically.
Don’t know your mould size? Put the silicone mould on your scale, press tare, then fill it with water to the brim — the weight in grams is the number you enter. Full guide →
Fill in any field — the other two update automatically.
Your recipe
—total mix to weigh out
Jesmonite® liquid—
Jesmonite® base—
Terrazzo—
Max pigment (2% max)—
For %N% pieces: %L% liquid + %B% base (%T% total mix).
Weigh the liquid into your cup first, then the base into the same cup.
05 · The process
Four easy steps
STEP 1
Weigh into one cup
Mixing cup on the scale, tare, pour in the liquid to the gram — then weigh the base into that same cup.
STEP 2
Mix & colour
Two minutes to a lump-free batter. Add pigment, GlassRoxx or terrazzo chips now — stir it all the way through for a full, even colour, or swirl just a few times for a marbled effect.
STEP 3
Pour & tap
Fill the silicone mould, then tap the mould itself to bring trapped air bubbles to the surface.
STEP 4
Demould & seal
Demould when it's ready — about 30–40 min for AC100, 2 h for AC84, 4 h for AC730. Sand the edge, then seal once fully cured (24 h) and your piece is waterproof and stain-resistant.
06 · Start here
Jesmonite® AC100 Starter Kit
€ 19,99incl. VAT
- 1 bottle AC100 liquid + 1 bottle AC100 base
- 2 pigments
- 1 silicone mould
- Stirring sticks
- Printed step-by-step manual
You will also need a kitchen scale that reads in grams and a mixing cup. Prefer a different mould shape? You can also buy the starter set (liquid + base) with your own pigments and silicone mould instead.
In stock · order before 14:00 and it ships the same day · FREE shipping from €75
08 · Objections
The questions that stop people ordering
Answered here so nobody has to leave the page to find out.
Do I need any special equipment?
A kitchen scale that reads in grams and a mixing cup. No extraction and no mask for normal use. The starter kit brings the liquid, base, 2 pigments, a mould, stirring sticks and the manual — the scale and the cup are yours. Prefer a different shape? Buy the starter set (liquid + base) with your own pigments and silicone mould instead.
How do the two bottles work?
Everything is weighed into the cup: put your mixing cup on the scale, press tare, pour in the liquid to the gram you need, then weigh the base into that same cup and stir. The ratio is 1 : 2,5 for AC100 and 1 : 5 for AC84 and AC730, always by weight.
How much do I need for my mould?
Put the silicone mould on your scale, press tare, and fill it with water to the brim — the grams you read are your mould size. Multiply by 1,75 for AC100 or 1,95 for AC84 and AC730 to get the mixed weight, then add roughly 10% so you are not short. Or let the calculator above do it. A coaster is roughly 60 g of water, a small vase 200–300 g.
Is it waterproof? Can I use it outdoors?
Sealed AC100 is waterproof and stain-resistant, but stays indoors. For outdoors choose AC84 or AC730 with a Penetrating or Flexiguard sealer. Nothing is dishwasher-safe.
Which one should I buy as a beginner?
AC100, in a starter kit. Smoothest mix, fastest demould, and every beginner guide we publish uses it.
What if my first cast fails?
Send us a photo and we'll tell you what went wrong — usually the ratio or mixing time. Our guide on why a cast will not set and how to fix it walks through the usual causes. Cured Jesmonite® is inert and can go in normal household waste.
Shelf life and storage?
Store both bottles closed, in a dry place and not above 25 °C. Batch dates are on every bottle we ship.
Can I sell what I make?
Yes. Plenty of our customers run small homeware brands on it. You may not use the Jesmonite® logo as your own brand mark.
Delivery, returns and VAT?
Order before 14:00 and your parcel ships the same day. FREE shipping from €75. You can return your order within 14 days of receiving it, in its original condition and packaging and with proof of purchase. All prices include VAT.
Create sustainably. Start with one pour.
Water-based, solvent-free, and simple enough for a first attempt. Two bottles, a scale and the manual in the box — you'll have a finished piece before dinner.
€ 19,99 · AC100 Starter KitShips today if ordered before 14:00
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