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.
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However, it can be made more versatile if the blade is cut, as shown in the figure. This more acute wedge-shaped version of the shovel is easy even in the most dense, parched soil.
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The need for large apertures of various diameters occurs very often. Some cut them with a jigsaw, others use a drill and then sanded the edges with a file, others are turning to...
