Convert cubic Blender models to a Minetest nodebox model. Originally intended to be for making collision/selection boxes for OBJ models, but both can be done.
PLEASE DO NOT SCALE ANY OF THE OBJECTS. Manually make them smaller/bigger rather than scaling them.
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Create your model
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Select which objects you want to be exported
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Press the Run Script button
In the directory of the Blender file, there will be a file called blender.lua. The model will be in there.
Here's a demonstrating how to use it to create a collision/selection box.