Here in S. Florida, the heavy peroxide treatment does the trick with one afternoon of sunlight. I use 35%% peroxide, which as Robin correctly points out, will turn skin white immediately...burn. My method of application is to put the solution in a spray bottle and gently mist over every hour. Usually 3-4 hrs of applications does the trick removes all discolorations and leaves a very nice looking piece of ivory. Also keep in mind that peroxide solutions of this intensity has a very little short shelf life with exposed to light. It is absolutely necessary to store the solution in a totally dark area. Do not simply store this on a one of your shelves. It will go bad in a very short period. Another warning, peroxide of this intensity also comes with some very strong vapors. It's best to do this outside and be especially careful of not getting it on anything that you don't want ruined. Nasty stuff. Tom Servinsky ----- Original Message ----- From: Robin Stevens To: pianotech at ptg.org Sent: Saturday, November 07, 2009 9:11 PM Subject: Re: [pianotech] Whitening yellowed ivories Sand key tops with a very fine sand paper ....put on a board with a retaining strip of wood (so they won't fall off)....Put out in the sun....buy the strongest peroxide from your drug store (here in Australia I order 120 volume) ...(it will have to be ordered in)...make up a stick with rag wrapped around it and make it look like a paint brush....why...because the peroxide will disintegrate the rag or paint brush in a couple of days.....Paint the peroxide on (in the sun) about every 1-2 hours....it will take 1-3 days in the sun with the peroxide to get the colour you want.....when happy with colour....wipe the peroxide off with a damp cloth.....then polish with a good buff and cutting compound. Warning....if you get this stuff on your fingers they will go WHITE....but goes away in a couple of hours. Just putting them out in the sun without peroxide will take FOREVER!!!! If you want further info I can sent you photos Robin Stevens ARPT South Australia -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091108/153cce78/attachment.htm>
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