What To Treat Walnut With For A Cutting Board

Walnut is a popular material for making cutting boards, as it is both strong and aesthetically pleasing. However, many people make the mistake of assuming that a walnut cutting board can simply be used as-is, without any treatment. Far from it! Without proper treatment and maintenance, a walnut cutting board won’t last long and will quickly become a blight on any kitchen. Irony of the situation is that, with the right treatment, a walnut cutting board can last a lifetime and become a cherished part of any kitchen. In this article, we will discuss how to treat walnut for use in making a cutting board, from sanding and prepping the wood to properly curing and maintaining the board for long-term use.

Sanding and Prepping the Walnut

Sanding and prepping the wood surface is an essential step for preparing it for use as a food preparation surface. For walnut, sanding should start with a coarse-grit sandpaper such as 80-grit, and then move to a finer-grit such as 150-grit. It is important to sand the entire surface evenly and thoroughly in order to ensure a smooth and even finish. Once the sanding is complete, the surface should be wiped clean with a damp cloth. There are several dyeing tips and finishing techniques that can be used to enhance the look and feel of walnut, such as staining, sealing, or oiling.

Choosing the Right Sealant

Examining the effectiveness of sealants on various materials can help determine the best option for preserving surfaces. When it comes to walnut, alternative finishes such as oil, wax, and polyurethane are available, but sealing methods are best suited for a cutting board. Polyurethane is the most popular sealant, as it provides a protective layer against moisture, bacteria, and other unwanted substances. It can also be used to give walnut a glossy finish that will enhance the beauty of the wood. Additionally, polyurethane is a durable sealant that will last for several years. It is important to note that polyurethane requires regular maintenance and may need to be reapplied every few years.

Applying the Oil or Finish

Applying a protective oil or finish to a surface can help preserve its appearance and prolong its life. When treating a walnut cutting board, it is important to consider the drying time of the oil or finish being used. Different types of finishes may require different drying times, and some may need to be applied multiple times. It is also important to consider the type of finish being used, as some finishes may be more suitable for certain types of wood than others. Taking the time to carefully choose the right oil or finish and applying it properly will help ensure the walnut cutting board lasts for years to come.

Properly Curing the Walnut

The curing process is an essential step to ensure a long-lasting, aesthetically pleasing finish on any wooden surface. When treating a walnut for use as a cutting board, it is important to properly cure the wood before applying any oil or finish. Curing the walnut will help to seal in the natural moisture of the wood and prevent it from cracking or warping. Drying methods such as air drying or kiln drying are the most common for curing walnut. Depending on the finishing techniques desired, different oils and finishes may be applied to the cured walnut. For example, when creating a cutting board, a food-grade mineral oil is typically used. Properly curing the walnut is the first step to ensuring a safe and aesthetically pleasing cutting board.

Maintaining the Cutting Board for Long-Term Use

Properly caring for the cutting board is necessary to maintain its longevity and aesthetic appeal. The cutting board should be stored in a cool and dry place, preferably away from direct sunlight and heat. When not in use, the board should be kept in a vertical position. Regular cleaning is also important to maintain the cutting board. After each use, the cutting board should be wiped down with a damp cloth and then dried with a paper towel or a soft cloth. To prevent the wood from drying out, it should be lightly oiled on both sides. This will also help to protect it against water damage and preserve its natural beauty.


When it comes to creating a cutting board from walnut, it is important to take the proper steps to ensure a long-lasting product. Sanding and prepping the walnut is key, as is choosing the right sealant. After applying the oil or finish, it is important to properly cure the walnut before use. With regular maintenance and care, the cutting board will remain in great condition for many years. As the saying goes, “A stitch in time saves nine.” Taking the time to properly care for the walnut cutting board from the start will ensure it lasts for the long term.

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