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I ran into a technical problem upon making my first print with the Ultimaker3. After the completion and removal of the print, I placed the Ultibot in water for the PVA to dissolve. Once the PVA was fully dissolved  I noticed the back of the Ultibot was not properly filled in. There were no error messages while printing and the machine seemed to run smoothly.  I am asking for help in figuring out why my printer did not fully fill in the back of my print even though the rest of the print was made correctly. I will attach a few images of my problems. Thank you!


Ultibot 2.jpg

Ultibot 3.jpg

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Hi, welcome to our community of 3D printing experts! 

It looks like you 3D printed it laying on it's back, right?


Do you remember what it looked like when you took the Ultibot of the bed? Did you use a raft for adhesion?


My first guess is that when you started your print, the filament was not fully loaded yet and it took a few layers for it to do so, and then your Ultimaker recovered (they do that sometimes miraculously) and finished the print.


You could try another print, and see if it starts to print from the start?


One way of telling that your filament is inserted all the way, is when you feed it, a small string starts to ooze from the nozzle. 

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