Cutting tools leave characteristic marks that can connect a set of toolmarks to an individual tool. When the depth
resolution of an optical microscope is insufficient, more advanced three-dimensional (3D) imaging methods such as
Scanning White Light Interferometry (SWLI) and confocal microscopy are required. We cut ten copper wires (2.1±0.1
mm diameter) maintaining a predefined blade orientation and position using diagonal cutting pliers. Images of the
sample surfaces were created using equipment based on optical microscopy, SWLI and confocal microscopy. SWLI and
confocal microscopy set-ups can produce consistent high-resolution 3D images that are relevant for forensic toolmark
comparison.
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