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AC84 base
Price range: € 19,59 through € 29,39 incl. VAT
Unit price: € 11,76 – € 15,67 / kg
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Product details
What you need with it
AC84 base powder only. Mix it with AC84 liquid at 1 : 5 (liquid : base, by weight). Buying a set gives you both, pre-measured.
Not included: silicone mould, digital scale, mixing cup and stick, pigments, sealer.
About this product
Jesmonite AC84 has been specially developed to offer even more creative freedom and versatility. This material combines the best properties of previous Jesmonite lines while adding new possibilities that take your projects to the next level.
Drying time of just 2 hours
No more long waiting times! Jesmonite AC84 is ready to be removed from the mould after only 2 hours, allowing you to have a finished product in your hands faster.
Weather-resistant
Ideal for both indoor and outdoor projects. Jesmonite AC84 is resistant to sun, rain, and fluctuating temperatures, ensuring your creations stay beautiful for longer.
Endless colour possibilities
Personalize your projects with Jesmonite pigments. From subtle shades to vibrant fluorescent colours—anything is possible with AC84.
Flexible finishes
Choose a smooth finish straight from the mould for a sleek, modern look. Or give your objects a robust concrete appearance with an acid-washed finish.
How to use AC84
Five steps from bag to finished cast.
- Weigh 1 part liquid to 5 parts base on a digital scale. Not sure how much? Weigh the water your mould holds and use the calculator.
- Mix for 2 to 3 minutes until smooth, keeping the stick under the surface to avoid air.
- Colour (optional) with up to 2% water-based pigment, or fold in terrazzo chips.
- Pour slowly and tap the mould so air bubbles rise. Working time is short, so prepare everything before you mix.
- Demould and cure after about 2 hours, sand while the cast is still soft, let it cure for 24 hours, then seal.
AC100, AC84 or AC730?
Same way of working, different look and setting time. Read the full comparison.
| AC100 | AC84this product | AC730 | |
|---|---|---|---|
| Finish | Smooth, white; takes any pigment | Smooth grey or a concrete look | Natural stone look in 11 colours |
| Mix ratio | 1 : 2,5 | 1 : 5 | 1 : 5 |
| Demoulding time | about 30 min | about 2 h | about 4 h |
| Where to use | Indoor (seal it for splashes) | Indoor and outdoor | Indoor and outdoor |
| Best for | Indoor homeware: trays, vases, candle holders and decor | Versatile all-rounder: smaller objects, garden or bathroom pieces | Tough, textured stone pieces that live outside |
| Skill level | Beginner | Beginner-friendly | Advanced |
All three are fully cured after 24 h and take Jesmonite® pigments. New to casting? Start with AC100.
Questions & answers
How much Jesmonite® do I need for my mould?
Fill your empty mould with water, pour it onto kitchen scales and weigh it in grams (1 ml of water is 1 g). Add about 10% for spare. For AC100, divide that figure by 2 for the liquid and multiply the liquid by 2.5 for the base. In a hurry? Use our free Jesmonite® calculator.
Why did my cast come out chalky or soft?
This is nearly always a mixing problem, not the material. Too much liquid makes a soft, chalky cast, while too little makes it thick and fast-setting. Use accurate digital scales and stick closely to the correct ratio for a hard, clean result.
What is the difference between AC100 and AC730?
AC100 is a gypsum-based variant made for indoor decorative casting and easy for beginners. AC730 is a tough, cement-based variant built for stone effects, suitable both indoors and outdoors, but more advanced to work with. In short: AC100 for indoor homeware, AC730 for textured pieces that can go outside.
What makes AC84 different?
AC84 combines the best of both worlds: it is as easy to pour as AC100, but it is weather-resistant like AC730, so you can use it indoors and outdoors. It takes all Jesmonite® pigments and can be finished smooth or with an acid-etched concrete look.
How do I make it suitable for outdoor use?
Cast in AC730 or AC84, which are made to handle the weather, and seal the piece with a penetrating or Flexiguard sealer. Expect to re-seal outdoor pieces periodically, as no sealer lasts forever against rain and frost.
What customers say
4.5 out of 5 on Trustpilot, 32 reviewsFast delivery, great products! Good packaging!
First time ordering and it was great! Products as described and arrived quickly, will definitely be ordering again.
Paying wasn't a problem, the product was as it should be, the delivery was no problem and in a reasonable timespan. That's as good as I can wish for.
Reviews are collected by Trustpilot after delivery. Read all reviews on Trustpilot.
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