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I know it won't be as smooth as with smaller nozzles, but the surfaces ends up being so uneven that it doesn't look like it's solely a matter of "resolution". It looks like certain areas of large flat surfaces get distorted while the rest of it works fine and end up like I'm expecting. It persists through the entire print as well, only smaller surfaces look better. For example it's usually most prominent in the center of a large round surface, where it looks like it prints uneven on the exact same place on every line, creating one or several ditches or elevations across the middle. I have levelled the bed after changing nozzle. I did however have issues with 0.25 PLA prints not sticking to the bed earlier and found several threads where people recommended to level it by eye instead of with the calibration paper that came with it. I got it to work really well with the 0.25 nozzle and I might be putting the nozzle a little bit too close for the larger nozzles after getting a feel for the 0.25. I realize now that the larger nozzles probably need a little more space than the 0.25 does. I have however also read on this forum that the leveling mostly affects the first layer. But I'll try that with the next print, thank you for the help!

Hello! I've recently started printing with an Ultimaker 2+ through my new job. I've experimented a whole lot with both PLA and ABS and it's working great for the most part. However, I'm having some issues with the larger nozzles. If I'm printing something big that doesn't need that much details I'd like to use the 0.6 or 0.8 nozzles to save time, but larger flat layers like the bottom layers tend to distort in a wierd way. The printer leaves "ditches" or bumps in lines on the surface. My first thought was under/over extrusion, but I figure that since the distortion appear on the same place on every new line that's not the case, and I can raise or lower the speed significantly without making it better nor worse. The kind of symmetrical distortion that happens makes me think it's software related, but I'm fairly new to 3D printing and would need some help to figure out what I'm doing wrong here. I've never experienced this with the 0.25 and 0.4 nozzles so far. Even though I had some issues and a lot of trial and error with the 0.25 nozzle to begin with I find it much easier to get good results with now compared to the larger nozzles. I'm posting an image where you can hopefully see what I mean. Currently printing with ABS, though it doesn't seem to matter if I use that or PLA when it comes to this problem. Regards, Jocke