G'day Doc
Notice how the underside of the hole is smaller in diameter than the top?
The whole purpose of using friction as a means of starting a fire is to generate enough heat to generate a ember that is hot enough to ignite dry tinder.... right?
Is there any reason why the ember only has to be generated from the wood of the spindle or the wood of the hearth board?
Our Aboriginals used to use either dry grass or dried herbivore dung to generate the ember
The ones I've seen used involved packing the hole with either crumbled up dry herbivore dung or crushed up dry grasses. The spindle was then placed on top and rotated to generate the friction required to generate the ember.
In the Aboriginal fire stones I've seen used, the smaller diameter hole functions in pretty much the same way as the notch on fireboards (i.e. a way for the embers generated to be able to spill out onto the kindling).
The tinder was generally placed under the stone so that the embers fell out onto the tinder.
Generally takes less effort than relying on the wood of either hearth board or spindle to generate the coal :thumbup:
Kind regards
Mick