Cura 3.5.1 slicing is strange

[Biomike 0]

I'm using Cura to slice a square with 2 open sides (it's a lid for a box to hold a small component) and Cura is consistingly slicing it strangely.

 

It only lays a brim down for half of the shape, then will try to lay down midair filament in the regions without a brim.  Obviously, not good.

 

Any tips/tricks/suggestions?

 

Thanks in advance for any advice.

[smartavionics 287]

1 hour ago, Biomike said:

Any tips/tricks/suggestions?

 

Why not attach a screen shot or the gcode or a project file so we can see what you are talking about?

[Biomike 0]

Ask and you shall receive. I've attached pictures of what it should look like, and then what actually comes out.

 

[smartavionics 287]

Thanks for the pictures, that looks like the model is not flat at the bottom. If you lower the model by a small amount, say 0.1mm or so, does it then print as expected?

 

Can you attach the model file to this thread, please?