Test with candle warmed 60x60x60 mm soapstone cube

Test with candle warmed 60x60x60 mm soapstone cube

I put soapstone 17:00 with temperature 37,3 Celcius to woollen sock and into my sleepingsack.
And then 21:00 it’s temperature was 28 Celcius.
Of course this was at home, but still inside woollen sock it gives slowly warmth out in closed space like sleepingsack.
That is good news. For getting sleepingsack warm in forest. Also for survival reasons.

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