
A simple feeder for small birds can be done literally in minutes, using a tin can and a stick of wood or a suitable diameter of the branch.
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WAKE TAPE RECORDER
I designed a digital timer, which wrist watch, MONTANA, has a great standby time (up to 24 hours), good precision (the error is only a few seconds per day), simplicity, performance and...
Model rocket boat
Missile boats are designed for application of sudden missile attacks on surface ships and transport ships on transportation on the sea lanes in the areas of fighting. It is small, with a...