You can, of course, brush them, however this will not last long. More radical means of plastic washer embedded between the half-loops.
There is another way to get rid of the squeak. You need to shorten rod one half loop and put the loop inside a steel bearing ball.
Recommend to read
VALDAI CRAFTSMEN
The picturesque surroundings of Novgorod, an ancient Russian city situated at the motorway Moscow — Saint-Petersburg somewhere halfway from the city to the Northern capital Wherever the...
AT THE START OF THE “STRATOS”
Have trace modeling particularly attractive trait: despite the relative simplicity of the models, they give space for the creative work of the children's thoughts, development of design...
