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MB Fibreglass Moulding & Casting Supplies
MB Fibreglass Moulding & Casting Supplies
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Product Safety

  • Contains Reaction mass of: 5-chloro-2-methyl-4-isothiazolin-3-one [EC no. 247-500-7] and 2-methyl-2H -isothiazol-3- one [EC no. 220-239-6] (3:1), Reaction mass of: 5-chloro-2-methyl-4-isothiazolin-3-one [EC no. 247-500-7] and 2-methyl-2H - isothiazol-3-one [EC no. 220-239-6] (3:1). May produce an allergic reaction.

Jesmonite AC100 Water Based Casting Resin 3.5kg Kit

4.6 out of 5 stars 268 ratings
£31.98 with 5 percent savings £9.14 per kg
Was: £33.70
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Purchase options and add-ons

Brand Polycraft ( MB Fibreglass )
Specific uses for product Craft
Material Acrylic Resin
Compatible material Plastic
Item form Liquid

About this item

  • Jesmonite AC100 - A water-based, two-component, acrylic polymer resin system. Suitable for a wide range of casting and laminating applications where the end-user wants to reduce the many risks associated with conventional solvent-based materials.
  • Versatility - Extremely versatile material that encourages to create both internally and externally. Allowing artisans to create durable, lightweight and detailed objects for a wide range of applications. The sky is your limit!
  • Finished Colour - The finished colour is white with a peachy/pink tone. To get a pure white cast, the Jesmonite White Pigment at a maximum of 2% needs to be added.
  • Ratio to Mix - 2.5 Powder : 1 Liquid. The demoulding time is 2 hours, with a cast being fully set after 24 hours.
  • No Caused Damage - AC100 can be cast without damage to rubber moulding compounds and without limitation to scale. This material is fire-resistant, achieved a Class ‘0’ firing rating.
› See more product details

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Product Safety

This product is subject to specific safety warnings

  • Contains Reaction mass of: 5-chloro-2-methyl-4-isothiazolin-3-one [EC no. 247-500-7] and 2-methyl-2H -isothiazol-3- one [EC no. 220-239-6] (3:1), Reaction mass of: 5-chloro-2-methyl-4-isothiazolin-3-one [EC no. 247-500-7] and 2-methyl-2H - isothiazol-3-one [EC no. 220-239-6] (3:1). May produce an allergic reaction.

Product information

Technical Details

Manufacturer ‎Jesmonite ( MB Fibreglass )
Part number ‎JES1003.5
Item Weight ‎3.5 kg
Product Dimensions ‎24.6 x 24.5 x 24.1 cm; 3.5 kg
Item model number ‎JES/AC100/KIT/3.5KG/V
Colour ‎White
Material ‎Acrylic Resin
Item Package Quantity ‎1
Special Features ‎Water Based
Specific uses ‎Craft
Included components ‎Liquid & Powder
Batteries included? ‎No
Batteries Required? ‎No

Additional Information

ASIN B07JNF43JZ
Customer Reviews
4.6 out of 5 stars 268 ratings

4.6 out of 5 stars
Best Sellers Rank
Date First Available 27 Jan. 2010

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Jesmonite AC100 Water Based Casting Resin 3.5kg Kit

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What's in the box?

  • Liquid & Powder

    • Product description

    1kg Jesmonite AC100 Liquid
    2.5kg Jesmonite AC100 Powder

    Mix Ratio 2.5 parts AC100 Powders to 1 Part AC100 Liquids, by weight. (2.5 : 1)

    Jesmonite is a versatile range of water-based, solvent free composite materials ideally suited to the creation of decorative mouldings and glass reinforced laminates. These materials have a range of unique properties, which contribute to strength, durability, non-toxicity, and the ability to comply with many of the necessary test requirements of the construction industry, specifically those in regard to fire performance and impact resistance.

    Jesmonite AC100 is an Acrylic Composite material supplied in two parts, a powder and a liquid. It is suitable for both decorative castings and glass reinforced laminates, and can be pigmented using the Jesmonite range of water-based pigments. It is also possible to add a range of decorative and functional fillers in order to achieve a wider range of effects and to meet a broader spectrum of specifications.

    Jesmonite AC100 can be used both internally and externally, although external use requires the application of a suitable sealer or external paint system for long-term exposure. It is fire-resistant, having achieved a Class '0' fire rating under UK Building Regulations BS476 (Parts 6&7). Due to its solvent free formulation, AC100 can be cast without damage to rubber moulding compounds, and without limitation to scale. It is also dimensionally stable due to low exothermic reaction, and produces a small amount of expansion on set (1mm/ linear metre).

    AC100 is supplied in separate containers of liquid and powder, and mix ratios are variable to allow for both decorative and functional fillers. Normal casting and laminating requires a mix ratio of 2.5 parts AC100 Powders to 1 Part AC100 Liquids, by weight.

    Customer reviews

    4.6 out of 5 stars
    268 global ratings

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    Customers say

    Customers find the casting resin works well for their projects and is very straightforward to use. The material is durable, with one customer noting it gains strength over 24 hours, and serves as a great alternative to epoxy resin. They appreciate its nice finish and cool-to-the-touch feel when set, and one customer mentions it takes color well.

    Select to learn more

    FunctionalityEase of useDurabilityQualityTouchColor accuracy
    14 customers mention ‘Functionality’14 positive0 negative

    Customers find that the resin works well for their projects.

    "...the material, is so light and durable, also smooth to touch and I like the outcome!..." Read more

    "Love making these with this product works really well and sets in no time" Read more

    "Excellent product, comes well packaged as well! Have ordered again!" Read more

    "Amazing stuff! So love to work with it! Great quality and easy to use!" Read more

    11 customers mention ‘Ease of use’11 positive0 negative

    Customers find the resin easy to use and appreciate that it sets quickly.

    "...It dries very quickly and sometimes too quickly!! Super easy to use!" Read more

    "Love making these with this product works really well and sets in no time" Read more

    "used in molds. like the ease of use and speed of drying , items are tougher more substantial than when made with some similar products" Read more

    "...Sets quickly and gains strength over the next 24 hours. It's also non toxic, so it's more art friendly than plastic resin...." Read more

    8 customers mention ‘Durability’8 positive0 negative

    Customers find the resin durable and of good quality, with one customer noting that it gains strength over 24 hours.

    "...I love the material, is so light and durable, also smooth to touch and I like the outcome!..." Read more

    "...like the ease of use and speed of drying , items are tougher more substantial than when made with some similar products" Read more

    "...Sets quickly and gains strength over the next 24 hours. It's also non toxic, so it's more art friendly than plastic resin...." Read more

    "Amazing stuff! So love to work with it! Great quality and easy to use!" Read more

    7 customers mention ‘Quality’7 positive0 negative

    Customers praise the quality of this casting resin, noting its nice finish and effectiveness as a great alternative to epoxy resin. One customer mentions it's more art-friendly than plastic resin, while another compares it to marble.

    "...The result is incredibly smooth and feels cool to the touch, a little like marble..." Read more

    "...It's also non toxic, so it's more art friendly than plastic resin. Would love to play with the other variations and additives." Read more

    "The jesmonite itself is good, does exactly what it says on the tin. If mixing by hand it can be a little difficult to get totally smooth...." Read more

    "Really like how tactile the jesmonite feels. Great alternative to epoxy resin. Quick to demould, you can even emboss after its set" Read more

    4 customers mention ‘Touch’4 positive0 negative

    Customers like how the resin feels when set, with one mentioning it stays cool to the touch.

    "...I love the material, is so light and durable, also smooth to touch and I like the outcome!..." Read more

    "...The result is incredibly smooth and feels cool to the touch, a little like marble..." Read more

    "A wonderful plaster resin, that feels great to touch when set. It has a lovely flexibility in how you can use it...." Read more

    "Really like how tactile the jesmonite feels. Great alternative to epoxy resin. Quick to demould, you can even emboss after its set" Read more

    3 customers mention ‘Color accuracy’3 positive0 negative

    Customers are satisfied with the resin's color accuracy, with one mentioning it takes color well and multiple customers noting it looks amazing.

    "looks ok, was a gift so don't know any more" Read more

    "very easy to use and sets very quickly. takes colour well and gives a great finish" Read more

    "...The products we made with this looked amazing with a very nice finish to them." Read more

    Jesmonite
    5 out of 5 stars
    Jesmonite
    Love making these with this product works really well and sets in no time
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    Top reviews from United Kingdom

    • Daniel Gini
      5.0 out of 5 stars Great!
      Reviewed in the United Kingdom on 17 December 2024
      Verified Purchase
      I’m in love with jesmonite! I have started to create candle jars, trinket dishes and candle holders. I love the material, is so light and durable, also smooth to touch and I like the outcome! I wish I was better to avoided all the little bubbles but with practice I will get better! It dries very quickly and sometimes too quickly!! Super easy to use!
      Helpful
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    • Lisa Kim Hardy
      5.0 out of 5 stars Jesmonite
      Reviewed in the United Kingdom on 1 April 2025
      Verified Purchase
      Love making these with this product works really well and sets in no time
      Customer image
      Lisa Kim Hardy
      5.0 out of 5 stars
      Jesmonite

      Reviewed in the United Kingdom on 1 April 2025
      Love making these with this product works really well and sets in no time
      Images in this review
      Customer image
      Helpful
       Report
    • Amazon Customer
      5.0 out of 5 stars Fantastic casting material
      Reviewed in the United Kingdom on 20 October 2022
      Verified Purchase
      Very happy with this product! Use a pocket electronic scale to weigh out the liquid and powder base (5g powder for every 2g liquid). Stir until smooth (use a broad lolly stick for best results). Add mica powder or Jesmonite pigment, mix well then pour into the mould. It takes five minutes and can be demoulded just a few hours later. The result is incredibly smooth and feels cool to the touch, a little like marble (there are other versions of Jesmonite that is more marble-like, but this is the A100 version).

      Brilliant!
      7 people found this helpful
      Helpful
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    • tigger
      4.0 out of 5 stars Jesmonite AC100 Water Based Casting Resin
      Reviewed in the United Kingdom on 22 May 2024
      Verified Purchase
      looks ok, was a gift so don't know any more
      Helpful
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    • A C H.
      5.0 out of 5 stars Fast delivery and well packaged
      Reviewed in the United Kingdom on 25 March 2025
      Verified Purchase
      Excellent product, comes well packaged as well! Have ordered again!
      Helpful
       Report
    • Wendy
      5.0 out of 5 stars EASY TO USE
      Reviewed in the United Kingdom on 14 May 2024
      Verified Purchase
      used in molds. like the ease of use and speed of drying , items are tougher more substantial than when made with some similar products
      2 people found this helpful
      Helpful
       Report
    • nick
      5.0 out of 5 stars Amazing plaster and polymer combo, love it.
      Reviewed in the United Kingdom on 10 July 2019
      Verified Purchase
      A wonderful plaster resin, that feels great to touch when set. It has a lovely flexibility in how you can use it. Embedding, layering, cold casting, colour and stain. It does have issues with bubbles, but with care, brushing your molds with it first and I'm sure with degassing techniques you can get rid of most issued. Thankfully you can mix alittle to act as a great moddl filler too, adheres well to it self for repairs too. Sets quickly and gains strength over the next 24 hours. It's also non toxic, so it's more art friendly than plastic resin. Would love to play with the other variations and additives.
      Customer image
      nick
      5.0 out of 5 stars
      Amazing plaster and polymer combo, love it.

      Reviewed in the United Kingdom on 10 July 2019
      A wonderful plaster resin, that feels great to touch when set. It has a lovely flexibility in how you can use it. Embedding, layering, cold casting, colour and stain. It does have issues with bubbles, but with care, brushing your molds with it first and I'm sure with degassing techniques you can get rid of most issued. Thankfully you can mix alittle to act as a great moddl filler too, adheres well to it self for repairs too. Sets quickly and gains strength over the next 24 hours. It's also non toxic, so it's more art friendly than plastic resin. Would love to play with the other variations and additives.
      Images in this review
      Customer image
      14 people found this helpful
      Helpful
       Report
    • Edita Slakaitiene
      5.0 out of 5 stars Love from the first touch
      Reviewed in the United Kingdom on 2 May 2024
      Verified Purchase
      Amazing stuff! So love to work with it! Great quality and easy to use!
      Customer image
      Edita Slakaitiene
      5.0 out of 5 stars
      Love from the first touch

      Reviewed in the United Kingdom on 2 May 2024
      Amazing stuff! So love to work with it! Great quality and easy to use!
      Images in this review
      Customer imageCustomer imageCustomer image
      3 people found this helpful
      Helpful
       Report