[pianotech] Question about 19 1/2 wire

[Albert Picknell]

Hi Al
Size 19.5 metric wire is 1.100 mm, which is .0433" -- pretty close to what you measured.  The metric (e.g. Roslau) and AWG (e.g. Mapes) piano wire numbering systems both use the same numbers, but the sizes are not the same (despite what you might find in some suppliers' catalogues).  See the attached chart, a copy of which I keep pinned up in my shop.
Cheers,
Bert

--- On Thu, 4/12/12, Al Guecia/Allied PianoCraft <alliedpianocraft at hotmail.com> wrote:


From: Al Guecia/Allied PianoCraft <alliedpianocraft at hotmail.com>
Subject: [pianotech] Question about 19 1/2 wire
To: "Pianotech List" <pianotech at ptg.org>
Received: Thursday, April 12, 2012, 7:26 PM



I am restringing a piano that calls for 19 1/2 wire (2 note - 6 strings) near the tenor break after 4 notes (8 strings) that are wound. I find that I am out of 19 1/2 (.044), so I borrowed some wire for another tech, that wasn't tagged. I measured it and it reads (.0435). Might be metric? What do you think, use it or wait for the 19 1/2, .044? I don't think .005 will make mush of a difference, but it is at the break and that causes me to worry. I hate thumpy sounding wire strings at the break. 



Al -
High Point, NC



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