[pianotech] Polyester Finishing

[William Monroe]

Hi Michael,

Maybe I'll try and sand more, buff less.  I do use a large Milwaukee VS
Buffer with 8" or 10" lambswool wheels with the [Menzerna] pastes.  I think
I said Koenig pastes the first time, but they are Menzerna.  I'm after
perfection, and do a reasonable amount of poly work; touch-ups mostly, with
an occasional polishing of a lid or music desk.  My work is mainly for a
dealer - we haven't any finishing shops around and typically, if it is
better they're happy; they aren't going to send off a music desk for some
superficial scratches, know what I mean?  I've had reasonable success with
the pastes so far, except for them drying in the containers.  Are the bar
compounds really that different?

WRM

On Tue, Mar 17, 2009 at 7:56 PM, Michael Spreeman <m_spreeman at hotmail.com>wrote:

>  Hi William,
>
> There's no "easy" when it comes to poly work, it just flat out sucks no
> matter what.
> Yes, I would wet sand the entire lid and then buff it. The Konig pastes you
> have don't work very well with wheels, in my experience. If you have the
> equivilant of 600 grit scratches, I would wet sand with 1000 followed by
> 2000.  The 3000 is a major pain to sand with and I don't always use it;
> depends on the situation.  Then buff away.
>
>
> *Michael  Spreeman
> *http://www.spreemanpianoinnovations.com
>
>
>
>
> ------------------------------
> Date: Tue, 17 Mar 2009 19:13:23 -0500
> From: bill at a440piano.net
> To: pianotech at ptg.org
> Subject: Re: [pianotech] Polyester Finishing
>
>
> Michael,
>
> Good to see you here.  So, you wet sand in any situation?  What about
> surface scratches on a lid?  I'm talking about cleaning up the case of a
> used instrument here, rather than a repair type situation.  IOW, if the
> scratches were all over a lid, at about the level of p600 - p800?  It would
> seem in this case that using a wheel would be much faster and much easier on
> the body.
>
> William R. Monroe
>
> On Tue, Mar 17, 2009 at 5:54 PM, Michael Spreeman <m_spreeman at hotmail.com>wrote:
>
> I use the Menzerna 2.5 pound polishing compound bar with four 12" buffing
> wheels stacked on a Hitachi 7" polisher. They make a coarse and fine
> compound. They say the coarse will take out 600grit scratches. I wet sand
> down to 3000grit and only use the fine compound; it's faster and gives a
> much better final buff.  Finish with Maquiar's #5 Professional New Car Glaze
> to remove any remaining compound scratches (available at automotive paint
> stores).
>
> *Michael Spreeman
> *http://www.spreemanpianoinnovations.com
>
>
>
> ------------------------------
> Hotmail® is up to 70% faster. Now good news travels really fast. Find out
> more.<http://windowslive.com/online/hotmail?ocid=TXT_TAGLM_WL_HM_70faster_032009>
>



-- 
William R. Monroe, RPT
A440-William R. Monroe Piano Services, Inc.
314 E. Church St.
Belleville, WI 53508
608-215-3250
www.a440piano.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090317/a578e95f/attachment.html>