invisible gap in preview mode

[Philler 0]

Hi, using Cura 4.7.1 trying to print a hollow tube. The left SS shows the tube in Prepare mode and the right the same tube in Preview mode.

 

I've rebooted Cura several times but the same keeps happening. Created original in Tinkercad. Why is there an invisible gap here? I also have another gap on the other end of the tube similar to this.

 

ty

 

RollerV5.stl

[Smithy 1,141]

Check your STL file, it seems it is not watertight or the walls are not always connected. Such issues are 99% problems with the source STL file.

[kmanstudios 1,120]

I concur. Having looked at many models here to help, this type of issue is as @Smithy said percentage wise. I would go as far as to say 100% 😆