Always Check Compatibility Between Resin and Substrate Material

Why Compatibility Matters

Epoxy and other resins interact differently with materials like wood, metal or composites. Some surfaces absorb resin, while others may repel it or react negatively, causing defects such as cloudy spots, adhesion failure, or surface bubbles. Using a resin such as “Epoxytable 10-Ten” is ideal for deep pours in large wooden tabletops, but less suited for thin layers or materials that flex significantly.

Practical Steps for Ensuring Resin-Substrate Fit

• Test First: Before working on the main piece, conduct a small patch test with your resin and substrate to check for reaction and adhesion.
• Surface Preparation: Make sure surfaces are clean, dry, and, if necessary, lightly abraded to promote strong bonding.
• Seal Porous Materials: For absorbent substrates like raw wood, consider sealing with a thin layer of compatible resin to prevent air bubbles and uneven curing during casting.
• Review Technical Data: Refer to your resin’s instructions for recommended applications and compatible materials.

When This Matters Most

Compatibility checks are crucial for projects requiring structural strength (like tables), for creative castings with embedded objects, or when using non-standard materials. If you’re new to resin work, a beginner-friendly option like the “River-Table” Complete Kit provides guidance and help to minimise compatibility issues.