Greetings to all. Perhaps what counts is not really the amount of wood taken off the top when carving the rosette, but rather the wood that is left. A very intrincate lace with small voids will have more wood than a less intrincate one with larger voids, and this will affect the overal weight of the top. So it would be indeed a matter of top weight, and not of the amount of air moving in and out of the instrument. In my humble opinion, ancient luthiers did not pay that much attention to this issue. They were, more likely than not, more interested in the beauty of the instrument when they carved their rosettes. In fact, one particular luthier would use many different lace patterns, more or less intrincate, maybe thinking more about the selling price and less about the tone.
Thus, it would only be a matter of selecting a lace pattern that is appealing, and just carving it onto the top. Or even, doing like many modern Arab luthiers, who craft their ouds without any lace. Best regards to all, S. Ramos Collado --- El mar 17-nov-09, [email protected] <[email protected]> escribio: De: [email protected] <[email protected]> Asunto: [LUTE-BUILDER] Re: rose opening A: "julien stryjak luthier" <[email protected]> Cc: [email protected] Fecha: martes, 17 noviembre, 2009, 12:29 pm > Is there an easy and simple method to measure or calculate this > surface? (I'm not talking about some hard computer program or complex > mathematical formula ...we're lute makers after all ...) you might try placing the soundboard on a sheet of graph paper, photograph it and count the revealed squares. Might help if half the squares were colored like a checkerboard. Pretty sure yuo wont get a good trace working thru the lace pattern with a pencil point as the suondboard is thick compared to the width of the openings. Might get a decent rub on graph paper which could then be square counted to give an estimate. While photoshop has a reputation for being hard, the features I was mentioning are not particularly difficult. I suspect photoshop elements would suffice, tho I used this technique long before it existed. -- Dana Emery To get on or off this list see list information at [1]http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html __________________________________________________________________ !Obten la mejor experiencia en la web! Descarga gratis el nuevo Internet Explorer 8 http://downloads.yahoo.com/ieak8/?l=e1 -- References 1. http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
