Sales occurring in the pencil with eraser on the end is very convenient: it is always possible to erase an inaccurate line or bar.
However, to make such a pencil, if you use the appropriate cap from a ballpoint pen.
Cut off the top cap and insert the carved from a school eraser cylinder.
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MICROMILL
"I read in Modelist-Konstruktor about the continuation of the “Small Mechanization” competition and decided to take part. I offer a simple and compact micro-mill. Its dimensions can be...
Apples instead of… laundry
For apple juice lovers I can suggest a homemade juicer that is simple to make and does not require large investments. It is built from an old washing machine.
Factory juicers have low...