(title added for lemmy by community mod)
Image description: Four images showing a candle burning down with the melting wax being collected inside a transparent candlestick resulting in another candle being formed.
(Originally published earlier today on aus.social) - Click the Fedi-Link to visit.
I think there might be some savings here, less wax is heated by the candle, so less will evaporate. But I don’t know enough about candles to know whether that’s significant.
At best this gives a marginal increase in duration for the price of twice as much wick.