During which stage of woodworking should one be particularly cautious about cross-contamination?

Being particularly cautious about cross-contamination during the finishing stage of woodworking is crucial because this is when the final application of stains, paints, or protective coatings occurs. Any contamination, such as dust, oils, or residues from other materials, can lead to defects in the finish, such as peeling, bubbling, or uneven sheen.

In this stage, it’s essential to ensure that the surface is clean, free of dust, and adequately prepared to prevent any adverse reactions with the finish being applied. Proper handling and environmental controls should be in place to mitigate any risks. This is why this phase demands heightened attention to detail regarding cleanliness and contamination sources, as it directly affects the durability and appearance of the finished product.

In contrast, during cutting the wood, while cleanliness is important for safety and accuracy, cross-contamination issues are less detrimental to the final finish. Choosing the wood primarily relates to selection rather than surface interaction. Assembling the project, while requiring some care, is less impactful in terms of surface treatments compared to the finishing stage.