What Naptha can't clean the EA usually does, so they compliment each other. In shop experiments EA had good effect on light Vertigris. And because of its properties it assists in removing moisture from the felt. I have used ESN and applied a heat directly to the center pin and no explosion, so i think your'e ok. But to be safe, i would use ESN after the hotbox.
-chris
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Chernobieff Piano Restorations
"Where Tone is Key, and Mammoths are not extinct."
865-986-7720 (text only please)
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Original Message:
Sent: 01-14-2023 16:51
From: Cecil Snyder
Subject: Center pin lubricant
When I first started in the business in the early seventies, I worked for a Wurlitzer dealer. This solution of VMP Naptha and silicone oil was recommended to me by a Wurlitzer factory technician. They were having an issue at the time with sticky action centers on some of the new instruments which I believe was due to the bushing cloth not being properly sized. The naphtha is a solvent for the silicone oil which carries it into the bushing cloth and then flashes off. I would be curious to know what the ethyl acetate is for since it seems to be more in the line of a solvent than a lubricant. Also, because I usually treat sticky action centers by heating the action in a "hot box" with a hair dryer and ethyl acetate is cautioned for its flammability, do you think this might pose a problem? Note, naphtha is flammable as well and I've never had even littlest explosion with it.
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Cecil Snyder RPT
Torrance CA
(310) 542-7108
Original Message:
Sent: 01-14-2023 11:27
From: Chris Chernobieff
Subject: Center pin lubricant
Try my Ethyl Silly Nap. Its based on what was used in the past except i made a couple improvements. I use it exclusively now and others report back to me they love it too. You make it yourself for pennies.
https://www.youtube.com/watch?v=WHYnqsQ-FuM
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Chernobieff Piano Restorations
"Where Tone is Key, and Mammoths are not extinct."
865-986-7720 (text only please)
Original Message:
Sent: 01-14-2023 09:12
From: David Stanwood
Subject: Center pin lubricant
My go to treatment for centers that are in good condition but too tight is VS Profelt. Soak and let dry overnight.
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David Stanwood RPT
Stanwood Piano Innovations Inc.
West Tisbury MA
(508) 693-1583
Original Message:
Sent: 01-14-2023 09:09
From: Greg Junker
Subject: Center pin lubricant
Does anyone use a product other than Protek CLP for sluggish center pins, such as for the common Kimball action centers? Just curious.
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Greg Junker RPT
Greg Junker's Piano Shoppe, LLC
Belleville IL
(618) 971-9595
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