E10 LED Adapter (Remix)

I've "remixed" [Modellaner's](https://www.thingiverse.com/Modellaner) clever [LED to E10 - Adapter](https://www.thingiverse.com/thing:3126350) to have a cavity for a 1/4w bias resister mounted internally. His design was suitable for lamp fittings which come apart easily, but this one will work with lamps which only allow access to the globe in its socket, not inside the fitting. For 6v, use a 270Ω resistor, soldered to the LED's positive leg, then feed the resistor and positive leg down the hole