STL UVMap Image ThreeJS Blender & Gimp
Steps:
1. Import an STL
2. Creating a UV Map
3. Map image contents to UVMap using Gimp
4. Export PNG
5. Use Nodes to apply UVMap image to Object in Blender
6. Use ThreeJS exporter to export .js file
7. Modify html/js to reference new .js and .png file
8. Aw yea.
I'm documenting this mostly for myself because I found it quite tricky to do..