Polishing White Plastic Key-tops

[Robin Stevens]

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 In my days at a firm that sold, and serviced Steinways, any key polishin=
g
was done with a foot square slab of scrap half inch hammer felt with Bras=
so
and metho.=0D
=0D
This method was used just in case the buffing wheel damaged the sharp ent=
ry
section at the back of the ivory. =0D
=0D
The felt slab was glued to a board to make it portable. Then a small amou=
nt
of Brasso was put on the felt with the same amount of metho.=0D
=0D
The up side down key was then rubbed across using two hands, making sure =
you
were not leaning too much to one side. This method stopped any liquid
running down the side of the key.=0D
=0D
I would say any fine cutting compound would work on the felt slab.=0D
=0D
 As for polishing on the buffing wheel...in my opinion a buffing "soap" i=
s
mandatory to stop burning. I did use stainless steel buffing compound at =
one
stage because it is white. but now the soap bought from piano suppliers i=
s a
light brown colour=0D
=0D
A large choice of polishing soaps is available at Metal Polishing supplie=
rs
including all sorts of soaps for plastics etc.=0D
=0D
Hope this helps=0D
Regards=0D
Robin Stevens=0D
South Australia=0D
=0D
=0D
=0D
=0D
 =0D
-------Original Message-------=0D
 =0D
From: Pianotech=0D
Date: 01/14/05 01:16:07=0D
To: pianotech@ptg.org=0D
Subject: Re: Polishing White Plastic Key-tops=0D
 =0D
Michael,=0D
 =0D
Haven't used Brasso, but I would imagine that it's similar to Flitz, whic=
h
works quite well on plastic.=0D
 =0D
Dave Stahl=0D
 =0D
In a message dated 1/12/05 6:29:17 PM Pacific Standard Time,
alanforsyth@fortune4.fsnet.co.uk writes:=0D
Brasso.=0D
 =0D
AF=0D
----- Original Message ----- =0D
From: Michael Gamble =0D
To: pianotech@ptg.org =0D
Sent: Wednesday, January 12, 2005 9:01 PM=0D
Subject: Polishing White Plastic Key-tops=0D
=0D
=0D
Hello list=0D
I don't know if this subject has been covered. A client has this Yam U1
which suffered a broken key-top. The broken part successfully glued in pl=
ace
but the whole area needs repolishing.The surface is lightly scratched -
enough to visibly and tactilely make one aware that all is not what it ou=
ght
to be. Any ideas on this? Dremel buffing mop? Any special gunge required?=
 =0D
Regards from across the Pond=0D
Michael G (UK)=0D
 =0D
=20
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