Oil-Based Polyurethane for Turned Work

Knowledge Base: Using Oil-Based Polyurethane on Turned Work

When maximum durability is required for a turned piece, oil-based polyurethane is the traditional workhorse. It creates a thick, resilient plastic coating that offers superior protection against scratches, moisture, and handling—though this durability comes at the cost of a slower, more deliberate application process.

Key Characteristics for Turners:

• Unmatched Durability: This is the finish to choose for functional items that will see heavy use. A fully cured polyurethane finish is tough enough to withstand daily handling and cleaning.
• Adds Warmth and Depth: The inherent amber tint of oil-based polyurethane significantly enhances the grain and deepens the color of many woods, particularly cherry, walnut, and oak.
• Slow, Off-Lathe Application: Unlike lacquer, polyurethane cannot be rushed. It must be applied off the lathe in thin, even coats, with 12-24 hours of drying time between each. The piece must be kept in a dust-free environment as it cures.

Is it Right for Your Project?

Consider the final use. For a decorative sculpture, the plastic-like film of polyurethane may be undesirable. But for a turned lamp base, a set of coasters, or a frequently handled box, its protective qualities are invaluable. It yellows over time, which can be a desirable feature for an antique look but should be avoided on pale woods.

Best For Turned Pieces Like:

Turned boxes, lamp stands, tool handles, and functional items that require a hard-wearing, protective coating but are not intended for direct food contact.