A very scientific one - some water to some vinegar. More water than vinegar but that's as close as I can get. I have no idea what the "proper" dilution should be. Vinegar is mostly water anyway. Alan > From: Jim Busby <jim_busby at byu.edu> > Reply-To: "College and University Technicians <caut at ptg.org>" <caut at ptg.org> > Date: Mon, 27 Apr 2009 14:43:35 -0600 > To: "College and University Technicians <caut at ptg.org>" <caut at ptg.org> > Subject: Re: [CAUT] Cleaning solution > > Alan, > > I know a teacher here that has used this for 50+ years with no bad results. > What ratio do you use? > > Thanks. > > Jim > > -----Original Message----- > From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Alan > McCoy > Sent: Monday, April 27, 2009 12:52 PM > To: College and University Technicians <caut at ptg.org> > Subject: Re: [CAUT] Cleaning solution > > Hi Jim, > > Vinegar and water is a very able yet mild solvent. Thin cotton - like an old > T-shirt - for application. Active ingredient in vinegar is acetic acid. Will > cut finger oils. Hasn't attacked finishes I 've used it on. Great for keytop > gunk. > > Alan > > >> From: Jim Busby <jim_busby at byu.edu> >> Reply-To: "College and University Technicians <caut at ptg.org>" <caut at ptg.org> >> Date: Mon, 27 Apr 2009 11:06:21 -0600 >> To: "College and University Technicians <caut at ptg.org>" <caut at ptg.org> >> Subject: Re: [CAUT] Cleaning solution >> >> Gerry, >> >> Good post. >> >> So here is what I'm finding out, so far; >> >> >> 1. Simple Green and Murphy's Soap seem to be safe for anything. >> >> 2. Alcohol, ammonia, windex, may hurt some finishes. >> >> 3. Cory products may be good (A refinisher here told me NO on these due >> to buildup. >> >> 4. Microfiber High Performance Polishing cloth? (Sounds good. Got to >> get >> me one) >> >> Anything else? >> >> Jim >> >> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of G >> Cousins >> Sent: Monday, April 27, 2009 10:18 AM >> To: CAUT >> Subject: Re: [CAUT] Cleaning solution >> >> Mike, >> I did a bunch of work and piano surface cleaning & maintenance formulations >> many years ago so here's my 2c. >> >> Do Not use ANY ammonia formulas on any high gloss finishes. Many of the >> Windex >> formulas and almost of the off label brands contain ammonia in the formula. >> It >> does dull the high gloss finish. >> >> For basic cleanings just use water. IF there are fingerprints, oils or >> derrivatives, use any neutral cleaning agent. Eg: Simple Green at >> appropriate >> dilution. You can also use the Cory Care products. He does have ok formulas >> although the pricing may impinge on the school budget. >> With any water based elixers always use the minimum, think moist rather than >> wet amount on a cheese cloth material. Cotton cloths ( towles, t-shirts etc. >> are made to absorb. They waste alot of fluids by wicking up the fluid into >> the >> cloth rather than holding/carrying the fluid to allow spreading onto the >> surface to be treated. Paper products are wood based and always cause >> scratching of some sort. >> >> Hopefully this is not newsworthy but figured I'd mention it anyway. >> Nitro/Satin finishes on SS are harmed by certain chemicals, thinners, >> alcohols >> etc. so a BIG word of caution and stay away. >> >> Back to the trenches. =) >> Gerry >> >> ________________________________ >> To: caut at ptg.org >> From: pwilliams4 at unlnotes.unl.edu >> Date: Mon, 27 Apr 2009 10:08:46 -0500 >> Subject: Re: [CAUT] Cleaning solution >> >> >> Seems to work for Oberlin. Although I think all their Steinways are satin. >> I >> haven't tried it. >> >> They do have one or two Hamburgs. I can ask Robert how they treat them. >> Maybe just a damp cloth followed by a dry one. That's what I would do on a >> high gloss. >> >> Paul >> >> >> "Mike Kurta" <mkurta1 at comcast.net> >> Sent by: caut-bounces at ptg.org 04/27/2009 10:02 AM >> Please respond to >> caut at ptg.org >> >> >> To >> >> <caut at ptg.org> >> >> cc >> >> Subject >> >> Re: [CAUT] Cleaning solution >> >> >> >> >> >> >> >> Oh Oh, I've heard that ammonia will cloud hi-gloss finishes, the same with >> Windex. Don't know if this is reliable info or not...... >> Mike Kurta, RPT > > > >
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