Considering the printer’s entire ecosystem, a 10-micron difference is nominal. The minimum feature size can never be smaller than the laser spot size, and there are many factors that affect this value: laser refraction, microscopic contaminants, resin chemistry, and much more. The Form 2’s minimum feature size on the XY plane is about 150 microns-only 10 microns larger than its 140-micron laser. This means that the printer can reliably produce XY features as small as 150 microns, about the size of a human hair. As the intended line widths get smaller than 150 microns, the measured interval starts to deviate significantly from the ideal. We put it to the test to see if this ideal resolution holds true.Īs the print’s line width decreases from 200 to 150 microns, the ideal values are within the 95% confidence interval of the measured value. The Form 2 has a laser spot size of 140 microns ( FWHM), which should allow it to print fine details on the XY plane. Practically, how does XY resolution affect your 3D prints? In order to find out, we decided to test the Form 2 SLA 3D printer. To truly know a printer’s XY resolution, it’s important to understand the science behind the number. Yet this number is not always included in spec sheets, and when it is, the published value is not always accurate. FDM 3D printers: the smallest movement the extruder can make within a single layerĪs a rule of thumb, the lower the number, the better the details.DLP 3D printers: the pixel size, the smallest feature the projector can reproduce within a single layer.SLA and LFS 3D printers: a combination of the laser’s spot size and the increments by which the laser beam can be controlled. Often discussed but seldom understood, the definition of XY resolution (also called horizontal resolution) varies by 3D printing technology: In the world of 3D printing, no factor influences print quality more than XY resolution.
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