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Polygonica is a solid modelling software toolkit for processing polygon meshes.

It combines powerful, automatic and robust healing operations (perfect for 3D Printing) with boolean operations,...

The file contains open edges, self intersections, and multiple shells. Any one of these can make it not printable.

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You need to fix the file before printing; our Polygonica software does...

Also, converting your STEP file to STL results in open edges and self intersections:

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Our Polygonica toolkit fixes this automatically in a matter of seconds, making the file printable.

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