[pianotech] Subject: Re: Curved cast iron plate question

Terry Farrell mfarrel2 at tampabay.rr.com
Tue Sep 15 09:18:36 MDT 2009


Hmmmm. Well, stranger things happen a sea, ya know! I guess that's  
what I also do. Happy planing. Ya might want to try to plane it like I  
taper soundboard panels. Do it first with a router and make "steps" up  
from the end (start with the deepest cut at the end of the block) of  
the block to the middle (I don't know if that is enough explanation  
for you to picture it). Routing it off first has the advantage of  
minimizing and planing and it also serves as a depth guide while  
planing. Hand planing an 8-inch wide hunk of hard maple AIN'T gonna be  
ANY fun!

Terry Farrell

On Sep 15, 2009, at 10:39 AM, Chuck Behm wrote:
>
> Thanks for the input, Terry. No, the pinblock was definitely altered  
> at the factory to fit the plate. The pinblock is flat on the bottom.  
> You can see where they planed through the layers of lamination to  
> taper the ends. Frank, (who brought me the plate and original  
> pinblock to copy) said that everything else about the piano appeared  
> normal. It wasn't until they had pulled the plate, and removed the  
> pinblock that they noticed the unusual curvature. I'm planning to  
> plane a new block to match the old, unless someone tells me that's  
> the wrong course of action. Chuck

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