In its pure state, it is widely considered a food-safe finish by regulatory bodies like the FDA for indirect food contact. Pure tung oil, often labeled as "100% pure tung oil," is a natural oil that cures, or hardens, through a process called oxidation.
Achieving Tung Oil Food Safe Thin Coats for Kitchen Use
These formulations often include metallic driers and other additives to accelerate curing. Maintenance: Re-oil occasionally to maintain the water-repellent barrier without stripping the surface.
The Critical Distinction: "Tung Oil Finishes" It is vital to distinguish between pure tung oil and commercial "tung oil finishes" found on store shelves. Pure tung oil meets these criteria, which is why you will find cutting boards and salad bowls crafted from this finish.
Achieving Food-Safe Thin Coats with Pure Tung Oil
Testing for food safety usually involves ensuring the finish no longer feels tacky and has developed a hard, non-porous surface that can be cleaned without degradation. Always read the label carefully; if the product contains anything other than pure tung oil or explicitly states it is a polymerized blend, assume it is not suitable for food-related projects.
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