Cellulose aceto butyrat, abbreviated CAB, is a modified natural substance from wood. This is the material from which PB Swiss Tools Classic and multicraft handles are made. Because the modified natural materials in air-tight boxes and drawers can develop an unpleasant smell, we add a slight vanilla aroma to neutralize it. The video “Eastman Cellulose Esters” from Eastman shows how the material is made and how to care for it.
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