Hi I am a newbie to 3D printing, just got an ultimaker 2 and has been experimenting with it.
I found that the few layers of my models constantly are not bonding together are strands are coming off. This is true for models with or without overhangs.
I searched different forums but I could not solve this issue. I have attached the top and bottom image of the model. The top looks great. But the bottom has strands coming out.
Here are my settings:
nozzle temp: 230
bed temp: 60