[Why do my prints keep messing up?]

Thanks for the advice so far. I tried adjusting the build plate again and it seemed to help a lot, or at least a print actually finished and didn’t just ball up to a mess in the nozzle. I’ve attached a picture of the most recent print. It finished but on some areas it still looks like there are some stray strings - I can’t tell if it’s a design error or still the printer (which is an Ultimaker 2 Go). These designs are made by elementary students so it’s possible there could be some flaws. Also, any suggestions about removing the blue tape and just going to glass instead? I’m not sure if I would benefit from it or see a real difference. Thanks in advance everyone! 

[Why do my prints keep messing up?]

Thanks for the advice so far. I’m going to try the bed leveling calibration again with those tips and see if that helps. I’ll see if a glue stick helps. Right now I have the blue painters tape on it as suggested on the manual when I set it up. My model is the Ultimaker 2 Go, by the way. 

[Why do my prints keep messing up?]

Hi everyone,

 

I am new to 3D printing and I’ve been using it the classroom, however, I keep running into issues when printing. I’ve tried some suggestions with adjusting the heat and speed but it seemed to make the problem worse.  I’ve attached this picture of the recent print. Can you please tell me what I’m doing wrong? It keeps messing up and sticking to the nozzle. Help please!