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For me, the parts are cut a bit down scaled, so the size is smaller than I designed them. Do you know what could cause this? they are scaled in X/Y/Z ... I did not measure the scaling right now, but it seems to be scaled proportional. I designed it in "mm" and choosed "inch" in the post processor dialog.
How to Test and Set a Chinese (China) Made CO2 Laser Power Supply to Get Long Life From Your CO2 Laser Tube for Your Laser Engraving and Laser Cutting Machine System