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This resource from Boxford facilitates the manufacture of a teaching aid for spur gears for use in the classroom. It includes CAD drawings of the gears and backing plate, which could be used to manufacture the device using a laser cutter. There is also a picture of the finished item.
This resource from Boxford provides CAD files for the manufacture of a teaching aid for mechanisms. It includes photographs of the final product and CAD drawings of the component parts used, for manufacture by hand or laser cutter.
Produced by the Technology Enhancement programme (TEP), these materials help students to understand, design and prototype mechanisms (including levers, gears and linkages). The resource also supports students to work through some of the mathematical concepts involved in calculating gear ratio.