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
A “SOFT” HAMMER
If you pin, as shown in the illustration, a conventional hammer with a thin layer of polyurethane or of thick rawhide, it becomes possible to use it during the Assembly of panel...
THE LINER IN UNIFORM
Still in the process of creating a long-range bomber Tu-16 in the brigade of General types of OKB A. N. The Tupolev appeared first outline of a passenger jet Tu-2AM-3-200. Working...
