<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=us-ascii"> <META content="MSHTML 6.00.2900.2873" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV dir=ltr align=left><SPAN class=093231015-06072007><FONT face="Bookman Old Style" color=#0000ff size=2><STRONG>Hi Maestro Terry</STRONG></FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2></FONT></STRONG></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>Yes, this help me a lot.</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2></FONT></STRONG></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>I'm not new but it's difficult for me to write in English.</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2></FONT></STRONG></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>I try to call you several time but nobody has answered to me. ( about sitka)</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>(I used for long time Abete rosso (red spruce) from Ciresa- Italy )</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><FONT face="Bookman Old Style" color=#0000ff size=2><STRONG>I meet you in occasion of the mitting with Del ... some month ago </STRONG></FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><FONT face="Bookman Old Style" color=#0000ff size=2><STRONG>and  just  I decided  to change system.</STRONG></FONT> </SPAN></DIV> <DIV dir=ltr align=left><SPAN class=093231015-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2></FONT></STRONG></SPAN> </DIV> <DIV dir=ltr align=left><FONT size=2><STRONG><FONT face="Bookman Old Style"><FONT color=#0000ff><SPAN class=093231015-06072007>I still not decide what it's better, to cut the ribs whit router</SPAN> <SPAN class=093231015-06072007>or to laminate them. (?????)</SPAN></FONT></FONT></STRONG></FONT></DIV> <DIV dir=ltr align=left><FONT size=2><STRONG><FONT face="Bookman Old Style"><FONT color=#0000ff><SPAN class=093231015-06072007></SPAN></FONT></FONT></STRONG></FONT> </DIV> <DIV dir=ltr align=left><FONT size=2><STRONG><FONT face="Bookman Old Style"><FONT color=#0000ff><SPAN class=093231015-06072007>Thanks again </SPAN></FONT></FONT></STRONG></FONT></DIV> <DIV dir=ltr align=left><FONT size=2><STRONG><FONT face="Bookman Old Style"><FONT color=#0000ff><SPAN class=093231015-06072007></SPAN></FONT></FONT></STRONG></FONT> </DIV> <DIV dir=ltr align=left><FONT size=2><STRONG><FONT face="Bookman Old Style"><FONT color=#0000ff><SPAN class=093231015-06072007></SPAN></FONT></FONT></STRONG>Marco De Lellis<BR>Piano Workshop Inc.<BR>PTG Registered Piano Techinician<BR>21-05  31st Avenue<BR>Astoria NY, 11106<BR>Tel. 001 212- 575 4949<BR>Tel. 001 718 - 956 3110<BR>www.pianoworkshopny.com<BR>info@pianoworkshopny.com<BR><BR></DIV></FONT> <DIV> </DIV><BR> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <B>On Behalf Of </B>Farrell<BR><B>Sent:</B> Friday, July 06, 2007 10:35 AM<BR><B>To:</B> Pianotech List<BR><B>Subject:</B> Re: Rib Crowning Jig<BR></FONT><BR></DIV> <DIV></DIV> <DIV><FONT face=Arial>I've been buying my last few bags from Vacu-Press <A href="http://www.vacupress.com/vacuumveneering.htm">http://www.vacupress.com/vacuumveneering.htm</A> . The one in the picture is an older one that I can fit an entire soundboard panel in. The last bag I ordered is a custom sized bag - I think it is about 60 inches by 30 inches - to easily accommodate my largest rib caul. Too big a bag is not really any detriment as they evacuate quite quickly - less than a minute or so. I've used other bags - ones with a zip-lock type seal and didn't like them (wood dust gets in the zip closure and makes it difficult to close. The Vacu-Press closure system is very simply and easy to keep clean - work very well.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>I don't cut the spruce any particular thickness. I simply aim to have at least five or six laminations in a rib. Five or six laminations pretty much guarantee that you will have no noticeable springback - fewer laminations will produce springback, which makes it difficult to predict final rib radius. So I may have five laminations in one rib and nine in another - all depends on what cuts I have laying around. If I am cutting new wood for a rib project I aim for six laminations. 15mm is about the shortest rib I use - so five 3mm laminations will go into a short rib like that. If my rib is to be 28mm tall, I'd cut them 4 or 5mm thick, glue 'em up, and plane down to final rib height (after ripping) and end up with 6 or 7 laminations. I really doesn't matter - use enough laminations to avoid springback and don't use so many that your rib consists of more glue than wood.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face="Bookman Old Style" color=#0000ff><STRONG>"do you use a different pattern ( radius) and lenght?"</STRONG></FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Different than what? Different than the original? Yup. I am not a piano designer. I just cut and glue. All the piano bellies that I have installed in my shop and all the ribbed soundboards that I have built for other rebuilders have been built to the design specifications of Del Fandrich. Yes, different rib array, different rib dimensions, different rib crown radius (multiple radii), different rib tapering and with little exception, different rib function. And of course, all these differently designed ribs are glued to a different designed soundboard panel, which in turn is glued into a modified piano rim.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>The fabulous work that Ron Nossaman is doing has many things in common with Del Fandrich's approach to piano design work.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><SPAN class=ital-inline><FONT face=Arial>I don't mean to come across with a condescending tone, but are you new to this list? If so, WELCOME!!  I only ask that because there has been voluminous discussion in the past about these topics. A search of the pianotech archives will yield tons of info.</FONT></SPAN></DIV> <DIV><SPAN class=ital-inline><FONT face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=ital-inline><FONT face=Arial>The picture below is a full-sized display model of a typical Fandrich-designed soundboard system. Because it is light and portable - I bring it to conventions and the like for display purposes - I call it my "Porta-Belly" (and no Del, it is not a "porta-potty"! - sorry, private joke - of sorts).</FONT></SPAN></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><IMG alt="" hspace=0 src="cid:093231015@06072007-2D71" align=baseline border=0></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Hope this helps.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV> <DIV><FONT face=Arial size=2>Farrell Piano</FONT></DIV> <DIV><FONT face=Arial size=2><A href="http://www.farrellpiano.com">www.farrellpiano.com</A></FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"> </DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><FONT face="Bookman Old Style" color=#0000ff size=2><STRONG>Hi Terry  " Maestro"</STRONG></FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2></FONT></STRONG></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>it's very interesting the vacuum sistem. (I fall in love)</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>some question:</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>do you use a specific vacuum bags? (how big)</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>how thick you cut the slice of spruce?</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>and do you use a different pattern ( radius) and lenght?</FONT></STRONG></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2></FONT></STRONG></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=796580312-06072007><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2>thank for your time</FONT></STRONG></SPAN></DIV> <DIV><STRONG><FONT face="Bookman Old Style" color=#0000ff size=2></FONT></STRONG> </DIV> <DIV><SPAN class=796580312-06072007><FONT face="Bookman Old Style" color=#0000ff size=2><STRONG>Marco</STRONG></FONT></SPAN></DIV></BLOCKQUOTE></BODY></HTML>