Pump Drill: Difference between revisions
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A [https://en.wikipedia.org/wiki/Bow_drill#Pump_drill '''Pump Drill'''] and its variant the [https://en.wikipedia.org/wiki/Bow_drill '''Bow Drill'''], are two ancient devices powered by a simple twist of string. | A [https://en.wikipedia.org/wiki/Bow_drill#Pump_drill '''Pump Drill'''] and its variant the [https://en.wikipedia.org/wiki/Bow_drill '''Bow Drill'''], are two ancient devices powered by a simple twist of string. | ||
Originally used to drill small holes ''(and still used for some craft acitivites)'' they are now most commonly used in woodcraft and survival courses as a means of making fire by rapidly rotating one piece of wood against another to | Originally used to drill small holes ''(and still used for some craft acitivites)'' they are now most commonly used in woodcraft and survival courses as a means of making fire by rapidly rotating one piece of wood against another to generate heat by [https://en.wikipedia.org/wiki/Friction#Kinetic_friction '''Friction''']. | ||
[[Category:Drilling and Boring]] | [[Category:Drilling and Boring]] | ||
Revision as of 14:23, 30 October 2015
A Pump Drill and its variant the Bow Drill, are two ancient devices powered by a simple twist of string.
Originally used to drill small holes (and still used for some craft acitivites) they are now most commonly used in woodcraft and survival courses as a means of making fire by rapidly rotating one piece of wood against another to generate heat by Friction.