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Like Food? Thank a Tractor
The Farm Tractor is an intermediate difficulty Metal Earth model with at least 50 pieces on two sheets of metal. The tractor's fundamentals -- a powerful engine, two large drive wheels, and steering wheels in front -- have remained unchanged for many years.
Each Metal Earth model is laser etched in meticulous detail on one, two, or three 11 cm (4.33") metal sheets. Pop out the pieces by hand (or use wire cutters to get especially crisp lines), bend the tabs using needle-nose pliers, and fit them together as shown in the simple pictorial instructions. Metal Earth models are a little less challenging than our 3D wooden puzzles, but you do need some patience and dexterity because they're also much smaller. For maximum dramatic effect, display your model on the LED Display Base or the Solar Spinner (sold separately, see the Related Products tab).
Please note that Metal Earth models have sharp edges and are not suitable for children under 14.
Are you curious...?
The word "tractor" comes from the Latin word meaning "to pull" (trahere) and was defined in print in 1901 as "an engine or vehicle for pulling wagons or ploughs." "Traction engines" -- portable steam engines on wheels that could drive other machinery via a flexible belt -- were around in 1839...and those can trace their origins to an 1812 "barn engine" that powered a corn threshing machine. The first practical self-propelled traction engine, forerunner to today's tractors, came along in 1859. By the end of the 1860s oxen and horses the world over were losing their jobs.
A tractor's most basic function -- providing high torque (tractive effort) at low speeds -- hasn't changed. Originally used mostly for tilling, tractors today can serve as multipurpose engines for all manner of agricultural implements, or they can be highly specialized. The latest and greatest tractors incorporate GPS devices, onboard computers, comfy enclosed cabs with entertainment devices, and autosteer systems. Can driverless tractors be far behind?