As I understand linseed oil and flaxseed oil come from the same plant seeds. Linseed oil has some dryers and other additives that make great as a protective finish for wood and metal alike. Those same additives make it unsuitable for use on food service surfaces. I use it as the finish on the gun stocks I carve, it’s incredible. I think it would be great as a protective coat on a smoker. I use flaxseed oil, the food safe version, as the last layer of seasoning on my cast iron cook ware, it makes a beautiful and durable finish. If it gets as dark on the smoker as it does on the cook ware it would look sharp.
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