What You’ll Need

• “EpoxyWood” – Wood Restoration Epoxy Resin for Deep Penetration and Waterproofing: A solvent-free epoxy resin perfect for creating wood fillers or waterproofing repairs.
• “Carbon Resin” – Epoxy Resin for Carbon Fiber & Fiberglass Coating: Excellent for composites where strength with low weight is needed.
• “Epoxytable 10-Ten” – Deep Pour Epoxy Resin for Tables, Up to 10cm Casting: Ideal for projects requiring thicker layers with microsphere additives.
• “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm: Best for precise, clear castings using microspheres for volume or texture.
• Microspheres (glass, polymer, or phenolic as preferred for your project)
• Protective gloves and dust mask
• Mixing containers and sticks
• Clean, dust-free working area

See Microsphere Mixing in Action

Watch a side-by-side comparison of common resins blended with microspheres and observe how the texture changes. Notice the difference in viscosity and the resulting finish for each resin type.

Step 1: Prepare Your Workspace and Safety Measures

Epoxy resin work involving microspheres can generate airborne dust and sticky drips. Wear gloves and a dust mask throughout the mixing process. Ensure your workspace is well-ventilated and that all equipment is clean and dry. Lay down a protective surface covering if needed, and organise all required items for easy access. Keeping dust and debris away from your project prevents surface flaws later on.

Step 2: Accurately Measure and Pre-Mix the Epoxy Resin

Select the epoxy resin that best suits your application’s demands—such as “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm for clear work or “EpoxyWood” – Wood Restoration Epoxy Resin for Deep Penetration and Waterproofing for wood repairs. Carefully follow the manufacturer’s recommended resin-to-hardener mixing ratio, using precise measuring tools for reliability. Mix thoroughly but avoid introducing excess air, scraping the sides and base of your container for consistency.

Step 3: Blend in Microspheres Evenly

Once your resin is pre-mixed, it is time to add the microspheres. Stir microspheres in gently to prevent dust and clumping. Begin by sprinkling a small amount into the resin and mixing by hand, then gradually add more. Add microspheres slowly until you reach your desired consistency. For a lightweight putty, aim for a toothpaste-like texture—thick but still workable. Overloading can lead to an unstable or crumbly mix, so always add incrementally while blending to a uniform compound.

Step 4: Apply Your Resin-Microsphere Mixture

With your filler, fairing compound, or bulked epoxy ready, use within the product’s logical working time. Microsphere and resin mixture can cure quickly in bulk—mix what you can apply in time. Apply to target surfaces immediately, using a spatula, putty knife, or calibrated tool, ensuring good contact and an even spread. Smooth the surface before the mixture begins to set, as sanding is easier once fully cured but excess material can be difficult to remove if applied too thickly.

Step 5: Cure and Finish Your Work

Allow the applied mix to cure fully, following timing instructions provided by your chosen epoxy system. Conditions such as temperature, humidity, and bulk mixing can all affect cure time. Always follow the manufacturer’s mixing ratios precisely for best results. Once hardened, sand and shape as needed. If working on clear casts with microsphere additives—especially with

Tips, Common Mistakes, and Troubleshooting

• Keep your working area dust-free to avoid imperfections.
• If the mix becomes too stiff, add more resin cautiously rather than overworking.
• Do not rush the blending—uneven dispersion of microspheres affects strength and finish.
• Test ratios with a small batch before scaling up for larger fills or castings.
• Be aware of increased curing speed in thicker applications; apply in thinner layers for deep areas.

Perfecting Your Epoxy-Microsphere Projects

Discover advanced tips for controlling workability and curing properties. Explore how gradual microsphere addition helps optimise both strength and sanding ease.