Boxes of nails and screws love to fall to the floor. This can happen by careless movement of the hand, and vibration of the table. However, if a box mounted on a vertical hinge bottom cover of a table or workbench, it will get rid of this bad habit. Rotate it around the hinge… and it will disappear under the top or will appear again.
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FOOT IN AID
To remove or hang on the door hinges alone — for many, this becomes an intractable problem. Make the device shown in the figure, and the case will move forward.
IN THE AIR “SCHEMATICA”
Elegant appearance, ease of fabrication, lack in construction materials in short supply, good flight characteristics are qualities that distinguish a schematic model of the airframe...
