Come along to the amazing Summer Moot (21st July - 2nd August), a festival of bushcrafting and camping in a beautiful woodland PLEASE CLICK HERE for more information.
I have been trying to make a lens to light fire out of oil floating on water. I get lots of bright dots under the glass dish but nothing gets hot enough. Anyone else tried this with success?
One could reverse it and have blobs of water under oil.
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