Bike pedals used to put a metal screw cap to protect the bearings from contamination. Now, instead, use the plastic plugs, which are often lost. Rescue plastic or nylon tubes from medical bubbles. Such substitutes being kept quite steady.
Recommend to read
THE OLD WIZARD GYPSUM
Lathe in a home workshop is not a luxury but a primary necessity: the fact of the matter is necessary to produce parts that are in the geometry are called solids of revolution. But is...
SNAKES HANG GLIDERS
On the pages of popular French children's magazine "Wife Anne" describes the two models of hang gliders, designed by Jean-Paul Movie and Christian Neuville. Wing Delta is an isosceles...
