.stl File Loader Plugin
You can find the STL loader here
To use it you just have to reference it after Babylon.js:
<script src="Babylon.js"></script><script src="babylon.stlFileLoader.js"></script>
Then you can use one of the static functions on the SceneLoader
to load.
See how to load from any file type
By default, the STL loader swaps the Y and Z axes. To disable this behavior, set
BABYLON.STLFileLoader.DO_NOT_ALTER_FILE_COORDINATES = true;