Granulometric Analysis of Sanding Dust from Selected Wood Species

Alena Očkajová, Martin Kučerka, Lubos Krišťák, Rastislav Igaz


Different types of sanders are used in every furniture factory and carpentry plant. The wood dust generated during sanding is considered to be one of the main health and safety hazards. Based on many studies, the whole inhaled fraction of particles less than 100 μm is harmful to health. Thus, it is important to know the specific particle size fractions of wood dust. This study compared the granulometric compositions of sanding wood dusts of selected wood species (beech and oak) and determined the statistical significance of individual factors (type of sander, wood species, grain size of sander, sanding direction) that affect the percentage of fractions ≤ 0.08 mm. The results confirmed that the use of narrow band and handheld (belt and disc) sanders caused high percentages of fractions ≤ 0.08 mm, above 90% in all cases. In these types of sanders, the working part of the sander is not completely covered, and the operator is in direct contact with the machine. Despite the use of a suction device, a certain amount of dust remains suspended in the air, or it settles on surfaces. In both cases, this dust poses a health and safety hazard.


Wood dust; Sanding of beech and oak; Various sanders; Granularity

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