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.

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Much better. The main opening is still too small though. Take a look at mine and see as mine are directly related to a real model. Basically the opening comes all most to the edge with not much meat left in the narrowest part. If you look at a real fan that is how they are made too and since we are squeezing air from one size to a smaller size we need as little of a restriction as we can get (though by its very nature there will be a ton of restriction just don't need to add more).