Modelling Polymer Clay | Non Hardening

Non-Hardening Modelling Clay for Fibreglass Moulding, Sealing and Composite Work

Modelling Clay is a non-hardening, pliable material designed for use in fibreglass and composite applications where shaping, sealing and gap filling are required. Available in 500g and 4kg sizes, it is ideal for mould preparation, edge forming and temporary sealing during laminating processes. This clay remains flexible and workable, allowing it to be easily shaped by hand to suit a wide range of applications.

Commonly used in mould making and fibreglass fabrication, modelling clay is ideal for sealing joins, creating fillets and blocking off areas to prevent resin leakage. It adheres well to most surfaces without permanently bonding, making it easy to remove once the job is complete.

Suitable for marine, automotive and industrial composite work, this modelling clay is an essential workshop material for achieving clean mould lines and controlled laminating results.

Features & Benefits

Key Features

• Non-hardening modelling clay for fibreglass applications
• Available in 500g and 4kg sizes
• Soft, pliable and easy to shape by hand
• Suitable for mould preparation and sealing
• Adheres to surfaces without permanent bonding

Key Benefits

• Allows easy sealing of gaps and mould joints
• Helps prevent resin leakage during laminating
• Creates clean edges and fillets in moulds
• Reusable and easy to remove after use
• Improves control and accuracy in composite work

How It Works

• Clay is shaped and applied by hand to required areas
• Seals gaps, edges or joints in moulds and tooling
• Prevents resin from escaping during laminating
• Remains flexible for easy removal after curing

Key Applications

• Fibreglass mould preparation
• Sealing mould joins and edges
• Creating fillets and smooth transitions
• Blocking off areas during laminating
• Composite fabrication and repair work
• General workshop use in fibreglass applications

Trade Tips

• Warm slightly by hand for easier shaping in cooler conditions
• Use to create smooth radiused corners for better laminate strength
• Ensure surfaces are clean before application for best adhesion
• Remove excess clay before laminating to maintain clean edges

Product FAQs

Q1. What is modelling clay used for in fibreglass work?
A1. It is used to seal gaps, form edges and create fillets during mould preparation and laminating.

Q2. Does the clay harden?
A2. No, it remains soft and pliable, allowing it to be reshaped or removed easily.

Q3. Can it be reused?
A3. Yes, it can be reused depending on cleanliness and condition after use.

Q4. Will it stick permanently to surfaces?
A4. No, it adheres lightly and can be removed without permanent bonding.

Q5. Is it suitable for mould making?
A5. Yes, it is commonly used in mould preparation and composite fabrication.

Q6. What sizes are available?
A6. It is available in 500g and 4kg packs.