Hygrometer

[Erwinspiano@AOL.COM]

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In a message dated 8/31/2002 12:56:51 PM Pacific Daylight Time, 
gnewell@ameritech.net writes:
           Gregg
                I didn't take it as criticysim but just clarifiying.
            The short answer is I've used three diiferent methods so far.
     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.
     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.
   Best>>>>>>>Dale Erwin

> 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!!!
> 
> >>      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. 
> 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?
> 
> >>      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.
>>    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.
>> 
> 


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