Although the V-rails produce a slight "white" dust, the wheels seem to hold up much better than POMs that Creality has worked with on Ender3. These are not bags on stock bikes. I'm running at twice the typical Ender print speed and pushing the limits a little. The wheels hold their shape much better and I'll probably take them back as a regular consumable. The white dust comes from parts that are still worn and a small amount of polycarbonate chipping etc on the V-rails. There was also dust on the POM wheels, but it was "dark" so you couldn't see it that clearly.
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