Cutting the “turbine” proved to hard for the children expected at the workshop (mainly 6 to 9 year olds) so I ended up doing a lot of the work in preparation. Keeping it simple was still important, as I had about 20 to make. The kids had still plenty to do making the base and decorating the sides with holes.
UPDATE: I did another workshop with a small group of four girls aged 10 to 13, and apart from sharpening the bearing tip, they managed to do it al by themselves (with guidance).
I included some do’s and don’ts in this Ible. A VERY important one is to keep a large enough gap between the top of the candles and the bottom edge of the can (at least 2.5 cm). When it is not large enough the candle wax can get overheated and start burning all over of the surface, not only at the wick (Yes, I learned from experience). At that stage you can no longer blow out the candle and you risk spilling burning liquid wax.
Of course, never leave candles burning unattended, especially in a self-made construction. Also be very careful with tools and the sharp edges cut in to the can and with hot surfaces. Obviously I can not accept any liability.
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