[pianotech] Profelt for loose centres?

[Jim Busby]

We've now tried it dozens of times for centers and we DON'T recommend it for centers. Not only does it NOT tighten, in some cases it made them looser. Surprizingly, we use it to voice hammers. A small drop in the groove does it. Experiment with it and you'll see. Works great on key bushings too.

Here's a trick to get a "small" drop; using a small needled bottle, point the needle down and let 5 or so "sacrificial" drops leak out on a rag, etc. Now, keep the bottle pointing downward and you'll see that the fluid is held up by the vacuum created. A very tiny drop will now flow, until after a while the suction is too great and you need to tip and start again, or just squeeeze out the size drop you need. It's very easy, fast really.

Jim Busby RPT

________________________________________
From: pianotech-bounces at ptg.org [pianotech-bounces at ptg.org] On Behalf Of david at piano.plus.com [david at piano.plus.com]
Sent: Wednesday, May 27, 2009 6:26 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Profelt for loose centres?

Folks I just found out that my question about VS Profelt for loose centres
was already post on the list by Paul Williams in November 2008.  I don't
see any answer though.

I see also that my other notion some weeks ago, about key cauls possibly
not being necessary for using VS Profelt on key bushings, was also
previously addressed:

>Subject: Re: [CAUT] VS Profelt - How much?

>one or two drops on the nesting footprint of the pin on each felt.
>Chris S
>----- Original Message -----
>From: Jim Busby
>To: College and University Technicians
>Sent: Friday, October 31, 2008 12:20 PM
>Subject: [CAUT] VS Profelt - How much?

>List,

>I got my bottle of VS Profelt today. How much do you put on front rail
>bushings? I have cauls and juice ready!

>Jim Busby BYU