Sylmasta Casting Kit

£39.90 inc. VAT

The Sylmasta Casting Kit contains all the products and equipment needed to start resin casting and producing high-quality moulds

SKU: CASTING-KIT-01 Category:


The Sylmasta Casting Kit contains everything needed to start creating high quality resin casts and reusable silicone moulds.

It is suitable for newcomers to resin casting as a starter kit and for those experienced in the craft who want to pick up the materials at a discounted cost compared to buying moulding rubbers and resins separately.

In model making, the Casting Kit is used to replicate modified kit parts made from modelling putty or to copy a master multiple times. It is also used for jewellery making and other resin art and craft tasks, and by industrial users who want to copy machine parts.

It is easy-to-use and comes with step-by-step instructions which explain the moulding and resin casting process. We have also uploaded an instructional video filmed at SylCreate HQ which you can view under the Videos tab towards the top of this page.

Each Sylmasta Casting Kit contains the following:

  • Sylmasta 380 Silicone Moulding Rubber 450g
    380 Silicone Moulding Rubber is used to create flexible, highly detailed and reusable moulds. Moulds made from Sylmasta Moulding Rubber have low shrinkage with no distortion and good dimensional stability. Depending on the size and complication of the mould being created, it can be used to cast up to 20 different copies.
  • Polycast G26 Casting Resin 400g
    Polycast G26 Resin is a two-part, medium viscosity casting resin which cures to a light beige colour. It has low shrinkage and does not sag or distort with heat. G26 has a fast cure time and is designed for casting fine parts.
  • Release Agent 10g
    Mould Release Agent is used when making split moulds. It is coated onto the first half of the silicone mould once it has cured to prevent the two parts from sticking to each other.
  • Measuring cups
    Supercup Mixing Cups are used for the measuring out of silicone rubber and the mixing of the resin.
  • Wooden stirrers
  • Wooden stirrers for the mixing process.

  • Pipette
  • Pipettes are used to carefully and accurately dispense casting resin, activator and other liquids in the casting and mould making process.

Should you require further accessories such as plastikard for creating mould boxes, plasticine for two part moulds, and monoject syringes for greater control when dispensing liquids, then these can be purchased through our Casting & Mould Making Accessories section.

As well as the Sylmasta Casting Kit, we also sell the Sylmasta Casting Kit XL, containing five times as much G26 Resin and twice as much 380 Silicone Moulding Rubber at a further discounted price.

For creating ultra clear resin casts or producing moulds with rubber certified as safe to use with food, then please see our Clear Casting Kit.

To get an idea of what is possible with the Sylmasta Casting Kit, you can read our Showcase article on Paul Hallet, who casts scale historical buildings using 380 Moulding Rubber and G26 Casting Resin: Rome wasn’t built in a day – but it can be cast from resin in two years.

The following items were all made using the products available as part of the Sylmasta Resin Casting Kit.

To have your work feature in our Casting & Mould Making gallery, then please send an email with photos and a description to


This instructional video shows how easy it is to use the products in our SylCreate Resin Casting Kit. We create a two-part mould from the silicone rubber and then use it to cast a gear.


YouTube video

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