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
AND ONE, AND TWO
George S. khokhlachov — military retiree, he was 77 years old. My entire adult life, he enthusiastically engaged in technical creativity: innovative work, radio, photos and much more. In...
THE PLANE FOR VICTIMS OF PRESSURE OR VERY LAZY…
I think many know the situation: you come home from work - totally exhausted and again, eyes clinging to the instrument on the shelf and the "sticks" hanging on the wall since last year....
