Wood brochure - South Africa

Klingspor solutions for the wood trade and furniture industry
Sanding with handheld machines
Factors affecting the sanding with
handheld machines
Sander
The quality / roughness of the surface is largely determined by the grit size used. The smaller the grit size,
the finer the scratch pattern and vice versa: While increasing the stock removal rate and the penetration depth
of the grit, a bigger grit size will generally also result in a rougher surface.
Scratch patterns after using different grit sizes on handheld machines
Images 1-3 are close shots of a hardwood surface that was
sanded with 3 different grit sizes on a portable belt sander. The
comparison shows: The finer the grit, the finer the surface.
This phenomenon can also be observed during sanding with
a handheld orbital sander, as can be clearly seen in image
sequence 4-6: The finer the grit, the lower the number of
swirl marks, and the finer the surface quality.
Image 1: Grit 60
Image 4: Grit 60
Sanding with handheld
machines
Image 2: Grit 120
Image 5: Grit 120
Image 3: Grit 240
Image 6: Grit 240
39