mahsab

Thank you for your response. However, as I wrote in my post, the thickness of the layers seems to be very even, meaning they all appear to be exactly 100 or 200 microns thick (whether is 100, 150 or 200 doesn't seem to be making a difference). Rather the layers seem to be misaligned a bit in the X-Y direction (not Z).

Hi, I've been using my new UM1 without problems, however now I have bought a beautiful white PLA with the only disatvantage that it makes ALL, even the slightest imperfections visible. I have noticed that layers are a little misaligned in the X-Y plane, as can be seen in the picture below. The thickness of the layers is the same. Priting speed, layer heights and temperature don't seem to be making any difference. Neither do the Z-axis speed or vibration (since it was printed at both very high and very low speeds with exactly the same results). Since the layers appear to be even, I susped that the cause could be the Z-axis wobbling a little bit to much and causing the table to shift a little. Can anyone with some experience confirm if this appears to be the case? The brass nut is quite snug (I can't say that it moves freely in X-Y direction), so would in that case the solution be to sand the two pieces holding the nut a bit so it can move?