Analog heated bed v0.1
youmagine
One candle can bring an aluminum 3mm plate up to 50 degrees. A double candle can reach temperatures of 60 degrees. I haven't tried a triple candle, but other possibilities include oil lamps or spirit burners, possibly equipped with electronics that allow you to adjust the flame power using a servo. From idea to working concept took 34 minutes during the Ultimaker Meetup at ProtoSpace, FabLab Utrecht. To create the candle holder, cut out a circle in the Z-stage. I had already made the hole in advance when laser-cutting the parts. Use metal wire to hold the candle in place and secure it with an aluminum sheet covered in kapton tape. Turn on the wax light, place the aluminum sheet on top of the stage, wait for it to heat up, then start printing. For a double candle setup, simply create two holes in the candle and insert two wicks into one candle. This should also work with three wicks. Potential improvements include using a thicker aluminum piece above the flame or replacing it with brass. Additionally, placing a thin sheet of glass on top of the aluminum could eliminate the need for kapton tape. Using oil between the glass and hot plate might improve heat transfer.
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