johan 0 Posted November 17, 2013 in Top layer Hi I have a problem with top layer not being totaly filled. I have redused the acceleration settings in Marlin to 1000 ( from 3000) and that helped a bit, but still not good. The filament is squized out to about 0.9mm, but there is stil a gap of about 0.4 mm between each tread. The perimeters and loops is perfect, so I dont think that I suffer from under extrution. It looks like the hotend moves to fare from the previous tread.... This is my settings: https://dl.dropboxusercontent.com/u/55953222/Settings.JPG Johan Share this post Link to post Share on other sites
gr5 898 Posted November 18, 2013 in Top layer Please post a picture of the ".4mm gaps". This could be caused by many things. The most likely is something called backlash which has the tell-tale pattern of every other line is touching, and then a gap (touching/gap/touching/gap repeats across the top). There are many things that cause backlash - the easiest to check is belt tension - usually short belts: Here is a photo showing backlash and how it was fixed: http://umforum.ultimaker.com/index.php?/topic/1872-some-calibration-photographs/?p=14396 The very next post explains what causes the pattern. Share this post Link to post Share on other sites
johan 0 Posted November 18, 2013 in Top layer Hi, Thought I had my shortbelts nice and tight, but.... I have covered the printer with a large plastic sheet, to create a heated champer, so I guess the wood have dried out and loosened the bolts for the steppers. I will run a new print tomorrow to se if the problem is solved, but I really think you nailed it! Thank you! Johan Share this post Link to post Share on other sites
johan 0 Posted November 19, 2013 in Top layer gr5: Thightening the short belts did the trick! :-P Johan Share this post Link to post Share on other sites
