Tuning

GREEN GRAPHITE?

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Started by

Placido

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Opening post by Placido

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39
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venezia

Good morning, the original graphite on my grand piano is green; can you explain this color to me? Can I use liquid graphite over the green one? Many thanks to everyone.

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Reply 2 by pianoexpert

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3,876
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rocca di papa

It's a type of varnish. It should be stripped off... So I advise leaving it alone and sanding the rollers, gently using emery paper 600 first, then 1000 and 1200, in the direction of the escapement, and then lightly passing a graphite stick directly over the rollers themselves. Very soft, cylindrical graphite sticks can be purchased in fine arts stores.

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Reply 4 by Placido

Posts
39
City
venezia

If I wanted to remove the green varnish, should I buy liquid graphite or do I need to buy it in powder form and dilute it with something? Thanks in advance Maestro Ferrarelli.

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Reply 5 by pianoexpert

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3,876
City
rocca di papa

it is absolutely not worth it. You can do a test by brushing a tiny dot to see if the liquid graphite adheres to the green. But in reality, graphiting the repetition lever is done to eliminate the roughness of the wood surface. The green varnish achieves this purpose. Instead, I insist on using a graphite stick on the rollers or, even better, micro-teflon powder (absolutely NO TALC!) always after having gently sanded with 1200 grit sandpaper in the direction of the escapement)

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