<div>I have never tried that, I've always just used a shop vac, the small 1&1/2 horsepower one that I can carry with me. Using whatever vac the customer has available is chancy, they can be underpowered, full or just plain unsuitable so I prefer to bring my own. I use the vac (upholstery) brush then switch to the crevice tool and use a small brush I got in a beauty supply store. I think it's for highlighting hair tint, it's narrow, maybe 1/4" by about an inch wide, it cost a whole $.85 and fits between pins nicely. The bristles are stiff and by brushing back and forth with the vacuum running next to it I can usually get most of the crud out. It's also is great for cleaning bass bridges for inspection in verticals and old uprights. For the rest of the piano, I use Swiffer, under the strings for the soundboard etc. I usually go through 2 of the big floor size cloths. I vacuum the action being very careful around the Steinway style hammer rest felt, it's so soft my vac will rip them right off, I just brush them gently with my brush.
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<div>Crud accumulation under the strings and around the tuning pins is difficult to remove and kind of expected, short of hosing it down with a baking soda blaster which would be pretty messy for most homes, I think alittle crud is acceptable.
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<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">-- <br>Michael Magness<br>Magness Piano Service<br>608-786-4404<br><a href="http://www.IFixPianos.com">www.IFixPianos.com
</a><br>email <a href="mailto:mike@ifixpianos.com">mike@ifixpianos.com</a> </blockquote></div>