West System Mini Repair Pack 101 - Handy DIY Kit

The West System Mini Pack 101 is a handy DIY Kit containing 250ml of 105 Resin, 50ml of 205 Hardener and enough high-density filler to complete a variety of coating and bonding operations. West System Epoxy is a versatile, moisture resistant, high-strength plastic which adheres to a wide range of materials including fibreglass and PVC. This makes it ideal for projects that require water and chemical resistance and strong physical properties for structural bonding.

In the Kit 

• 250ml 105 Resin
• 50ml 205 Hardener
• High density filler
• 50mm x 225mm piece of 9 oz fiberglass tape
• Application brush
• Mixing stick
• Pipe cleaner
• 2 x Cleaning pads
• Disposable mixing cup
• Complete Instructions

West System 105 Epoxy Resin

West System 105 Epoxy Resin is the base material on which a 105 System epoxy compounds are built. The resin is a clear, pale yellow, low-viscosity liquid epoxy resin. Formulated for use with West System hardeners, it can be cured in a wide temperature range to form a high-strength solid with excellent moisture resistance.

105 Resin is formulated without volatile solvents and does not shrink after curing. It has a relatively high flash point and no strong solvent odour, making it safer to work with than polyester or vinylester resins. Resin viscosity is approximately 1000 centipoise (cp) at 72 F (22C).

105 Resin is designed specifically to cover and bond with wood fibre, fiberglass, reinforcing fabrics and a variety of metals when mixed at the proper ratio with a West System hardener. An excellent adhesive, 105 mixtures will bridge gaps and fill voids when modified with West System fillers and can be sanded and shaped when cured. With roller applications, it has excellent thin-film characteristics to flow out and self-level without fish eyeing.105 Resin/207 Hardener mixtures cure clear so you can achieve a natural finish when coating with varnish.

West System 205 Hardener

205 Hardner is standard cure time hardner so larger project or where a slower cure time is required use 206 Hardner

Epoxy & Fillers Selection Guide

Approvals 

All West System products are manufactured under a Quality Management System that conforms to BS EN ISO 9001:2000. As a result West System epoxy is a marine epoxy of the highest quality; to the extent that it has been approved by the Lloyds Register of Shipping for the last 20 years. 

Frequently Asked Questions - FAQs

What types of repairs can I make with a WEST SYSTEM Epoxy Repair Kit?

WEST SYSTEM repair kits are commonly used to repair cracks, holes, delamination, loose hardware, damaged fiberglass, wood rot, and other structural or cosmetic damage on boats, RVs, and household projects. Specific kits are designed for fiberglass, wood, plastic, and general repairs.

Do I need to measure the resin and hardener myself?

Many WEST SYSTEM repair kits contain pre-measured resin and hardener packets, eliminating the need for measuring. If using bulk products, follow the recommended resin-to-hardener ratio exactly to ensure proper curing.

How long should I mix the epoxy?

Mix the resin and hardener thoroughly for at least one minute, scraping the sides and bottom of the mixing container to ensure a complete blend. Inadequate mixing can result in soft or uncured epoxy.

How much working time do I have after mixing?

Working time depends on the hardener, temperature, and volume mixed. For 105 Resin with 205 Fast Hardener, you typically have about 10–15 minutes at 22°C (72°F) before the mixture begins to gel.

What surface preparation is required before applying epoxy?

Surfaces should be clean, dry, and free of contaminants such as grease, wax, paint, or loose material. Proper sanding or abrasion helps create a strong mechanical bond.

Can I use WEST SYSTEM epoxy in cold weather?

Yes. WEST SYSTEM epoxy can cure at relatively low temperatures, although cure times increase significantly as temperatures drop. Warming the materials and work area can improve results and speed curing.

When can I sand or paint the repair?

Most repairs can be sanded after reaching a workable cure, which may occur within several hours depending on the product and temperature. For maximum strength and finishing, allow a full cure before applying heavy loads or final coatings.

Can fillers be added to the epoxy?

Yes. WEST SYSTEM fillers can be mixed with epoxy to create gap-filling adhesives, fairing compounds, or structural repair mixtures. Different fillers provide different properties such as strength, ease of sanding, or crack resistance.

What safety precautions should I follow?

Wear gloves, eye protection, and work in a well-ventilated area. Avoid skin and eye contact with resin and hardener, and wear a dust mask when sanding cured epoxy. Always read the safety instructions included with the kit.

What are the most common causes of epoxy repair failure?

The most common issues include incorrect mixing ratios, inadequate mixing, poor surface preparation, contamination, and applying epoxy outside the recommended temperature range. Following the manufacturer's instructions helps prevent these problems.