[pianotech] Wurlitzer console action bracket hold-down screw

[Dean May]

Yes, a machine screw. The screw size corresponding to the anchor that fits
in the hole is a little smaller diameter than the original, but I've never
had any trouble with it in 25+ years.
 
Dean

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of paul bruesch
Sent: Monday, December 27, 2010 10:24 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Wurlitzer console action bracket hold-down screw


Dean,

I believe I have seen these in basement walls and at hardware stores. Does
it use a machine screw? Maybe this would be the simplest and most elegant
solution.  I had been thinking how much nicer the design would be with a
screw threading into a metal nut of sorts, rather than into wood. Thanks!

I have replaced popped wood screws with T-Nuts to hold down a damper pedal
bracket on the bottom board of a Kawai studio. Seems like quite an
improvement.

Paul


On Mon, Dec 27, 2010 at 8:46 AM, Dean May <deanmay at pianorebuilders.com>
wrote:


I use a concrete anchor bolt/nut when I have trouble with these Wurly spinet
action bolts. There is a concrete anchor nut that is made of lead, designed
to fit into a hole in the concrete, then as the screw is tightened, it
swedges the lead against the hole forcing a very tight fit. One of the sizes
available is a near perfect fit for the hole in the plate of these Wurly's.
The anchor looks like this: http://www.boltdepot.com/product.aspx?cc=35
<http://www.boltdepot.com/product.aspx?cc=35&cs=149&cm=89> &cs=149&cm=89 
 
First time I ran across this problem I was a newbie working in a music store
and I was eager to "prove" myself. I went to the local hardware and
explained my problem. The ole boy there helped me come up with this
solution. 
 
Dean



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