Quick Answer
Risks associated with using dried wood for a bow drill include reduced friction, increased chance of splintering, and potential for the drill to jam.
Dried Wood Characteristics
Dried wood is less effective for bow drill fire starting due to its low moisture content, which reduces the coefficient of friction between the drill and the bow. This can make it difficult to generate the necessary friction to create an ember. As a general rule, wood with a moisture content between 20% and 40% is ideal for bow drill fire starting.
Friction and Splintering
When using dried wood, there is an increased risk of splintering, which can damage the drill or bow. To mitigate this risk, use a drill with a rounded tip and apply gentle pressure to the drill, gradually increasing the pressure as needed. Aim to maintain a consistent angle between the drill and the bow to reduce the likelihood of splintering.
Tips for Using Dried Wood
If you only have access to dried wood, consider using a drill with a smaller diameter to increase the surface area in contact with the bow. This can help to generate more friction and create an ember. Additionally, try using a bow with a higher tension, as this can help to increase the friction and create a more consistent burn.
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