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>
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