Free 

I had a few extra sockets on a string I bought, but with the sockets empty there was an electric shock hazard from the exposed contacts, so I adapted this model.
This is simply the screw base from sat26's lightbulb model on Thingiverse , with an added notch so you can screw it in to a socket.
Obviously you should never use metal-infused or other electrically conductive filament for this model.











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