What is one homemade formula for removing varnish from old gunstocks?

Using a mixture of three level tablespoons of household lye to one gallon of boiling water is effective for removing varnish from old gunstocks due to the strong alkaline properties of lye (sodium hydroxide). Lye works by breaking down the resins and polymers present in varnish, making it easier to remove. The hot water serves to dissolve the lye and increase the effectiveness of the solution, allowing it to penetrate the varnish more rapidly.

While other mixtures might offer some cleaning properties, they lack the potency that lye provides for varnish removal. For instance, vinegar is more suited for cleaning through mild acetic acid but does not break down varnish as effectively. Acetone can dissolve finishes, but it is typically used in more specific circumstances and may not be as efficient for varnish on wood compared to what lye can accomplish. Baking soda, on the other hand, is a mild alkaline solution more suited for general cleaning rather than strong stripping of finishes.