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I have a floss kossel 3d printer,and i can´t improve a resolution resolution of her impressions. What can I do?
Already calibrated the printer, updated the arduino, tested temperature and veocity. Is there something in the programming that is missing, your last update or display does not show your settings?

whatsapp_image_2017-02-07_at_20.33.06_0.jpeg
whatsapp_image_2017-02-07_at_20.33.06.jpeg720×1280 72 KB

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Looks like you might have some pretty bad backlash there. Try homing the printer, then grab the nozzle with a pair of pliers. Are you able to move it around a bit? If you’re able to move it at all, then you have a problem. It should be absolutely rock solid, no flexing or movement at all.