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
UNDER A PYRAMIDAL SAILS
The proposed microart class DX-02 is built using the experience of Czech and American athletes, as well as materials of the journal "modelist-Konstruktor" about sailing armed with a...
CUTTER FROM DOWELS
For cutting the stencils required knife cutter. It can be made from construction nails (dowels). The handle bar drilled the hole 0.5 mm smaller than the diameter of the dowel and with a...
