I've used it for (re)sizing older key bushings. Seems to be of some benefit -- better than it was, and better than doing nothing if you're not replacing bushings. Also have used it on wippen felts to reduce/eliminate capstan impressions. It seems to work some there, as hammer line is definitely raised. However, I haven't used it long enough to know for sure how long-term those effects are. I'm surmising from my limited experience that, after a few months, key bushings are still somewhat better than before. (Certainly, VS Profelt is not intended as a substitute for bushing/felt replacement.) Doesn't work to resize loose centers--they get looser. When applying, I've found making multiple passes works pretty well. One or two drops to "prime" the felt for more absorption later. Then go back however many more times until it looks like the felt has absorbed all it can (usually a total of 3 passes seems about right). There was one set of balance rail bushings that came loose after application. Ended up rebushing that rail (at my own expense since I dripped the drops). I'm thinking the glue job wasn't good to begin with. No glue failure on the few Japanese and Korean pianos. When sizing key bushings, cauls are required for correct sizing, but you probably knew that already. You can call Pianotek for more information. -- JF On Wed, Feb 23, 2011 at 10:08 AM, David Love <davidlovepianos at comcast.net>wrote: > Can anyone elaborate on the where they've found practical use for this VS > Profelt product, or precautions for that matter. > > David Love > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20110223/48e1e404/attachment.htm>
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