When bonding wood to metal and aiming for strong, long-term adhesion, epoxy adhesives are usually your best choice. These adhesives are highly effective for joining dissimilar materials—as long as you choose the right formulation. Here are some key points to consider:

• Look for an epoxy that offers both strength and flexibility: Flexibility is crucial to help the joint withstand movement and stress caused by changes in temperature and humidity.
• Why does flexibility matter? Wood is porous and expands or contracts with changes in humidity. Metal, being a good conductor, responds to temperature fluctuations. A rigid adhesive might crack or fail over time under these conditions.
• Add a thickening agent if needed: Some epoxies are quite runny. A thickener helps prevent sagging or dripping during application—especially on vertical or uneven surfaces—while also ensuring an even bond line and strong adhesion.

To explore compatible adhesives and thickeners, check out the West System user manual, which includes a helpful product selection chart.