Color plays an integral role in why we perceive things differently. It is an art form, a science, and a universal understanding. While providing a specific focus on art, it is inherently experimental. 

Especially when it comes to refinishing.

Manufacturers often go for the cost-effective route when creating a piece of furniture. A desk, for example, is likely not to have the same type of wood inside and out. The interior of the drawers may be lumber-grade, while the exterior may house a variety of expensive wood solely for decorative purposes. Though, even trim pieces may be lumber-grade mixed with quality/veneer. Different types of wood don’t make a piece any less valuable.

Both common/white and luxury wood soak color up differently. This makes it hard for refinishers to consistently use the same stain for the entire piece. 

Diverse cuts of wood behave differently as well. Cross grain sands and stains alternatively to normal grain, which is something you should look out for when refinishing chairs specifically. There are four primary ways to cut a log into lumber for furniture making. Each method creates boards with distinct grain patterns, dimensional stability, and levels of waste.