MEASURING SANDPAPER
OPTICAL PROFILING SANDPAPER GRIT
Our 3D optical profilometer is a powerful tool for measuring the surface topography of materials with high precision. For example, it can be useful for evaluating sandpaper grit – the subject of this case study.
Grit size in sandpaper corresponds to the roughness and texture of its surface, which is crucial for manufacturing applications like sanding, polishing, or abrasive processes. 3D optical profilometry measures surface roughness by capturing detailed topographic maps of the sandpaper’s surface. The benefit of 3D mapping is in collecting large area measurements to better understand grit size and distribution.
It also allows us to compare sandpapers of various grit sizes, objectively analyzing the relationship between grit size and surface roughness.
40 Grit Min/Max range: 0.7255mm
100 grit min/max range: 0.3009mm
150 Grit Min/Max range: 0.2218mm
220 grit MIN/MAX RANGE: 0.1688
PARAMETER RECOMMENDATION TOOL
A unique feature to the Keyence VR system is the “Parameter Recommendation” function. If you have two samples with an undescribed or unknown difference, the recommendation tool can process the scans through a variety of metrics for sample comparison. Below demonstrates a direct comparison of five metrics (Sa, Sz, Sdr, Spc, and Ra) between the 40 and 220 grit samples.
