I’d want to protect my rug (how is that leg even that close to a wall with a piano often overhanging legs quite?) with discs to distribute the load, but that doesn’t much explain very even graphite rings or gray stuff rings; save that the clear circles for distributing the severe caster load also have rubber stay-in-place rings, which of course disintegrated over 7y. Or: Just something the piano tuner does?
2 Likes
