I have a Chinese 50W laser machine which i bought very recently. I just noticed this cutting problem with the X axis. I just gave a speed of 5 mm/s to cut a letter on a 3mm acrylic plastic sheet. It worked slow and perfect until it reached the horizontal axis which increased the speed and hence all the horizontal lines were not cut. I have attached a picture of the backside of the sample I just tried. Please help. Thank you in advance.
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