Hi. The tool is a MEL Script not a plug-in so you'll want to source it through the Script Editor and then run the complete command: mayaExportSTL (I noticed you had a typo in the image posted).
The tool you never knew you needed! This plugin will save you a ton of time by deleting Control Curves, baking (or ignoring!) Animations on Joints and Meshes, importing references and clearing name...
Ship hull for ship modeling Dimensions: 700 mm x 208 mm x 94 mm Material for 3d printed: ABS For installation of one or two electric motors and radio control equipment.
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roboneill O'Neill said about 7 years ago: