GLB Opacity glitch fix
If you ever tried opacity in your GLB or USDZ exports from 3d only to be saddened by artifacts, you may want to try this fix. I explain how to unglitch your opacity by exporting the same model twice into Blender. Then exporting from Blender with both opaque and opacity pieces together for a complete piece. If you have some other tricks on fixing opacity issues, I'd love comments! For now this is how I can achieve GLB files with clean opacity.