There are numerous ways to make current, to the ball of yarn did not run away and not out somewhere. The easiest is to put it in a box, basket, or, as shown in the drawing, just the right size jar.
Recommend to read
WINGED FOAM
The emergence in recent years of powerful and light microelectrophoresis DC and bystrozamorozhennyh batteries that can withstand large load, made it possible to create flying models with...
THE TRUNK OF THE CAR
Who more who less, but there is a need to transport long or bulky cargo which does not fit inside of the car. Designers have already come up with for these purposes a versatile...
