MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Thanks for looking into this.
I downloaded the new file (Time stamped 3:00 today). There is no longer a gap in the end of the fin.
Edit: the following does not happen when my advanced settings use 50% Minimum printing thickness in the advanced tab (but there is something funky going on with the tail curves. I was only able to save the image as a PNG file (called New_error). - Again, this no longer happens, I have left this text in case someone else gets this in error so they can correct it)
Yesterday I had used 3DBuilder (Microsoft) to correct the STL and it was working with S3D. I have attached that file for you to check.