Hello, I received my Ultimaker 2 a few weeks ago and made some great smaller prints so far, but recently I'm working on a slightly bigger print but found that the material won't stick enough and is warping quite a bit at times.
I releveled the bed countless times, printed with bed temperatures from 60 to 75 and in between. Used several different rolls of PLA material, it's a correct 2.85/2.90mm. Also printing with speed 50, this helped a lot but not far enough yet. Also fiddled with the material flow a little and the print temperature as people on this forum mentioned but no success.
I tried a clean glass bed, tried using hairspray (super hold/strong) and glue but nothing seems to help. Maybe I'll have to try the ABS acetone mixture if that works properly with PLA... rather be hammering a print off the build plate than have it pop off half way by this point.
The problem is the print just pops off the bed after printing due to the warping, making supports just fall off half way and sometimes the print head will start ramming itself into the print due to the warping.
Hope anyone can help me, I'm out of idea's.
Here are some pictures of the problem.