Why we advise against steel brushes

This is an English reading overview of the Chinese article, rather than a complete translation. The Chinese source has been updated since this overview was prepared; consult the original for the latest details.

The central idea

The brand advises against steel brushes for initial preparation and routine cleaning. Aggressive abrasion can produce surface brightness that is mistaken for natural patina and can affect the texture. Choose gentle, suitable brushes, work into the grooves patiently and keep the purpose focused on cleaning. The brand recommends ordinary toothbrushes or suitable nylon-filament brushes for cleaning grooves, and advises against steel brushes. Gloves and aggressive polishing can produce brightness that is mistaken for natural development. Do not start by buying a collection of tools: first understand the walnut’s condition and the purpose of gentle cleaning.