<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SERIF" FACE="Times New Roman" LANG="0"><I>In a message dated 8/31/2002 12:56:51 PM Pacific Daylight Time, gnewell@ameritech.net writes:<BR>
</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SERIF" FACE="Times New Roman" LANG="0"></I> Gregg<BR>
I didn't take it as criticysim but just clarifiying.<BR>
The short answer is I've used three diiferent methods so far.<BR>
My latest contraption is the fire hose top clamp system using a torsion type belly box. The bottom idler cauls sit underneath the box. I lay out the board on the curved box, apply glue to rib,set up the idler caul with the rods up,slide the top caul on turn down the wing nuts and apply 40 psi air preassure.<BR>
Hey I'm not in a panic when I do this. If I get em all on in 1 1/2 hrs no sweat. I dry a little less than 6 % emc for insurance and also our climate is a WAY drier here than the mid west and east in the summer. Our humidity cycles are reversed from yours and not as severe.<BR>
Best>>>>>>>Dale Erwin</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SERIF" FACE="Times New Roman" LANG="0"><I><BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">I was afraid my post would sound as though I was criticizing Ron's method. I really meant only to ask questions. I don't know enough to be critical yet. Only enough to be dangerous!!!<BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SERIF" FACE="Times New Roman" LANG="0"><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"> If your shop is humid without controls you'll want to rib the panel in hour or so and don't answer the phone. If Rh is lower in the shop that's different. My feeling is it takes a couple hours for the spruce to take on insuffiecnt moisture to significantly change the outcome of your rib crowned project. </BLOCKQUOTE><BR>
<I>I was afraid of that. I assume you use a go be deck? If not how do you get all the ribs on in that short amount of time. If your ribs are fanned do your clamps not run in to each other?<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"></I> Remember the conditions which many soundboard were pressed up in the Piano factories on the East coast were archaic at best. The zero EMC in the winter and 80% with high temps in the summer. In your worst day in your shop you'll all do better than that.<BR>
It sounds like there is a search for parameters in this discussion which is important and when found will keep us from having undue anxiety in the board making process.<BR>
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