Some problems about overhanging and accuracy of ultimaker 2

[chenliu 0]

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Hello! Sorry for not sure if you can see the pictures.

I am a PhD student studying in 3D printing. Now I am using Ultimaker2 to print some PLA models. However, there are some problems about resolution and quality about printed models. Some of the overhanging is not connected well in one printer(cc'ed picture). But this problem does not happen in another printer. Both of the printing programs and print materials are the same. I am really grateful if you can help me solve this problem? Which step could be the key problem and how to fix it? Thank you so much for your help! Looking forward to your reply!

Kind regards,

Chen

[gr5 962]

This is an interesting model! Does the model have that pattern in it? All those triangular holes?

This is a difficult pattern to print in the air. I suggest you change the cad model a bit such that you print only the horizontal lines from left to right on a few layers (in other words make those "beams" thicker towards the center of the part by .5mm). This will provide a support structure to print the final patter on top of.