Primal Fire
Fire plow
A groove-and-plow friction method famously associated with Polynesian and other Pacific traditions—rubbing a softer plow along a harder base until powder ignites.
At a glance
Energy investmentHigh energyWhole-body effort with less mechanical advantage than a bow. Rewarding when bamboo or soft tropical woods are available; punishing when wood is wrong.
ReliabilityMedium reliability
TimeOften longer than bow drill for beginners
Materials
- Soft dry base board with a straight groove
- Harder dry plow stick that fits the groove
- Tinder nest and kindling
Steps
- 1Cut a shallow longitudinal groove in the base board.
- 2Kneel over the board; drive the plow back and forth with long, firm strokes.
- 3Push powdered dust to the end of the groove where it can collect and heat.
- 4When the dust pile smokes and glows, tip or transfer into tinder and blow to flame.
- Groove glazes and stops producing dark powder
- Plow and base too similar in hardness
- Dust scatters instead of piling at the hot end
- Exhaustion before ignition—rest and reseat posture
Region fit
Best in: Tropical jungle, Coast & swamp · Poor in: Temperate forest, Desert, Mountains · Avoid in: Snow & ice
Temperate forestPoor fit Tropical jungleGood fit DesertPoor fit MountainsPoor fit Snow & iceAvoid Coast & swampGood fit
Fit keyGood fitPoor fitAvoid
Other methods
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