Lesson plan
Bark hack
A bark (or turpentine) hack is a tool used to remove pine tree bark to promote the flow of pine resin, which is used in naval stores production. The tool consists of a wooden shaft with a weighted butt and hook-like, replaceable, U-shaped blades at the head. The bark hack is swung much like an axe and is used to create a hatched chevron pattern ("cat face" or less frequently, a "blaze") into trees' exposed sapwood. The weighted end helps the operator follow through with the force necessary for the hooked blade to scoop out chips of hard pine wood. This would result in the tree's turpentine or resin stocks flowing directly down into a collection site in a similar process to tapping. Turpentine hacks were eventually phased out by the early 1950s, and today they are primarily historical tools, with modern resin collection using mechanized methods and updated forestry practices.
Article summary
A bark (or turpentine) hack is a tool used to remove pine tree bark to promote the flow of pine resin, which is used in naval stores production. The tool consists of a wooden shaft with a weighted butt and hook-like, replaceable, U-shaped blades at the head. The bark hack is swung much like an axe and is used to create a hatched chevron pattern ("cat face" or less frequently, a "blaze") into trees' exposed sapwood. The weighted end helps the operator follow through with the force necessary for the hooked blade to scoop out chips of hard pine wood. This would result in the tree's turpentine or resin stocks flowing directly down into a collection site in a similar process to tapping. Turpentine hacks were eventually phased out by the early 1950s, and today they are primarily historical tools, with modern resin collection using mechanized methods and updated forestry practices.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.