New Wessel, Knickel & Gross plate suspension system

[Dean May]

Is that counterbore and pilot a custom cutter or can you buy that off the
shelf somewhere? 

 

Dean

Dean May             cell 812.239.3359 

PianoRebuilders.com   812.235.5272 

Terre Haute IN  47802

 

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Jude Reveley/Absolute Piano
Sent: Thursday, June 26, 2008 8:11 AM
To: Piano Tech List
Subject: New Wessel, Knickel & Gross plate suspension system

 

Hey Dale, I thought you were supposed to be on vacation. Well since you
started this thread, here's a late entry...

 

I'm also trying this system out for the first time so here's a few comments:

 

1.	Yes, you probably should make whatever modifications to the
soundboard & rim in terms of providing a counterbore wide enough to allow
the plate to be as low as you'll need it. If you are doing this, chances are
that you are also making new bridgecaps, so if the original plate is sitting
so low along the rim as it does on many Steinways, you should probably
address this at the bridgecap first.
2.	Many Masons have countersunk holes for the perimeter lag screws that
will not accommodate the new suspension bolts of any system. Ron N.
suggested to me that I fill the holes with epoxy and "plate grindings
additive." This would work and since I prime my plates, there would be no
bonding issues. Alternatively, I decided to use a counterbore and pilot that
would accommodate a SS washer. These washers can be epoxied in place, the
countersink and hole will also be filled and then the washer gives a pilot
for redrilling the hole. The washer will be left unfinished solving any
problems of the bolt marring the paint as it is tightened down.
3.	Cost. Yeah well that's always the rub. It's an option that has to be
passed on to the customer. If we're talking a few bucks on big job, I'm
happy to support the folks at M&H and their effort to not only resurrect
WNG, but to add some revolutionary thinking to the catalogue. I like MSC
too.

Thanks Frank. This is a fine design and I especially appreciate the tip on
tight tolerances for the pilot. 

 

Jude Reveley, RPT
Absolute Piano Restoration, LLC
Lowell, Massachusetts
(978) 323-4545

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