param-mehta 0 Report post Posted February 19, 2015 in Bad shell with infill I'm getting some strange gaps in the outer shell of my prints when I print with an infill (of 20%) but it is perfectly fine without gaps when I use 100% infill. I figure this shouldn't happen because the outer shell gets printed in full during every layer. Any ideas? I'm using a 0.2mm layer height and 0.8mm shell thickness with a print speed of 75mm/s. Share this post Link to post Share on other sites
DidierKlein 640 Report post Posted February 19, 2015 in Bad shell with infill Hi, Maybe you still have the same thing with 100% infill but i shows less? This is under extrusion, http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide#underextrusion 75mm/s at 0.2mm layers should be fine, depending on your temperature (i would increase it to 220°c assuming it's PLA) Or reduce the speed to 50mm/s Share this post Link to post Share on other sites
shurik 84 Report post Posted February 19, 2015 in Bad shell with infill 75mm/s at 0.2mm layers should be fine What Didier said. Just to get to the root cause, try to increase the temperature and print slower - even 30-40mm/sec. If that goes well - the print head might need some cleaning - look for the "Atomic Method" to clean the head. Actually, performing it never hurts anyway. Share this post Link to post Share on other sites
param-mehta 0 Report post Posted February 21, 2015 in Bad shell with infill @Didier and Shurik thanks for the tips. I think this has something to do with the filament. I bought the white filament from China and was facing this problem with that filament. When I switched over to one of the UM filaments, the print was absolutely fine with the 20% infill. Do you think it is the quality of the filament or the colour? I've been told white requires the highest temperature to prevent underextrusion while darker colours need a lower temperature setting. Should I keep a higher temperature for the white filament? My current temperature is 220C. Share this post Link to post Share on other sites
shurik 84 Report post Posted February 21, 2015 in Bad shell with infill it is the quality of the filament Aye. Without a doubt. Higher temperature may negate some of the quality issues but it has problems of its own. In any case, 220C for UM White should be OK. Just make sure you've cleaned the nozzle after this cheap Chinese junk. Share this post Link to post Share on other sites
