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What does this device do?
An important aspect of the proper use of low-cost desktop micromills is a thorough characterization of their spatial accuracy and the surface quality of the fabricated devices. To address this, we provided a set of standard tests that characterize the spatial accuracy in Z-axis and X-Y plane for both negative and positive features. Also, these tests characterize the surface finish quality of microchannels created by micromilling on polycarbonate. We hope these tests result in a wider adoption of low-cost CNC mills in fabricating microfluidic devices.
The test devices are available in both .stl and .scad. The former can be further utilized by Fusion 360 to generate G-code as the input of the CNC machine. The latter is made available so that researchers can change any of the available parameters to design a new test device using OpenScad, and open source CAD tool.
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