Soapstone is talc with other minerals. Care should be used selecting the stones because some soapstones can contain gritty particles from various minerals.
Soapstone is the preferred material for Native Americans’ making of bowls for smoking pipes. The town of Hoboken, NJ derives its name from a Lenai Lenape word for Island of pipe stone (Hoboken was originally an island in the Hudson River before it was filled in to attach to the river bank. It should surprise no one that those sections have constant issues with flooding.)
Another lubricant not yet mentioned is one I learned from Mario Igrec, who picked it up at the Bosendorfer factory. They call it “milk”, a mixture of powdered Teflon and Prolube or Protek as a solvent. It’s extremely effective for quieting pedal rod guide bushings, and the cups in the back of the pedal. I have used it in a pinch for the trap lever/ pedal rod contact point. I also use it for lubricating knuckles, applied with a brush. I don’t like applying Teflon powder getting in the air and breathing the particles, and I’m sure my clients would appreciate not having that nuisance as well. After the solvent dries, some Teflon will flake off, but quite little, which can easily be picked up with an alcohol soaked paper towel. As Dave Conte wrote, we need to be conscious of the long term consequences of the products we use in customer’s pianos.
Joe Wiencek
NYC
Original Message:
Sent: 1/27/2026 11:03:00 AM
From: Dave Conte
Subject: RE: Grand Pedal Rod Squeak
Hello, all. Nobody mentioned soapstone. It was our go-to when I was in school. It's dry and you can keep in in your shirt pocket like a pencil.
I haven't seen VJ lube in a long time, but it was also a staple in the piano lab. It's Vaseline with molybdenum. Don't know what the J stands for. Surprising that it didn't work, but adding Teflon seems to be a logical enhancement.
Be cautious of bar soap. Many contain a number of palm and citrus acids. Others contain lye. Both of which are corrosive.
Short-term solutions with long-term consequences are contrary to good service and our mission.
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Dave Conte, RPT
Piano Technician in Residence
The University of Tennessee
College of Music
Knoxville TN
(817) 307-5656
Owner: Rocky Top Piano
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