Wheelchair wooden stick, even if it is with a rubber tip in the ice can bring, slipped on the ice surface. However, if the end to drill a hole and insert a sharp metal rod from the cane will be versatile for any season. V. GOLOVASHIN, Rybnoe, Ryazan region.
Recommend to read
COMBINATION LOCK
About code locks wrote more than once. However, most of them are difficult to repeat. Design suggested by our Bulgarian friends (the journal "Radio Television Electronics"), devoid of...
CASTING OF PLASTICS
The details of the models are usually made of plastic or metal by machining. However, when they have much better detail molding plastic in a plaster mold. To prepare plastic from acrylic...
