Jim,
You might very well be correct here. I thought that the key
was indexed on its bottom but the clamp provided pushes the key to an angle
iron on the side. This could cause exactly what you are talking about. I
will have to check this out. Now I’m feeling a bit intrigued. Thanks!
All the best,
Greg Newell
Greg's Piano Forté
www.gregspianoforte.com
216-226-3791 (office)
216-470-8634 (mobile)
<http://www.wealthyaffiliate.com?a_aid=NNaYfMKd>
http://www.wealthyaffiliate.com?a_aid=NNaYfMKd
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of jim ialeggio
Sent: Saturday, January 02, 2010 7:37 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Key wood prep....was....Applying PVC-E
Your inaccuracy could very well be caused by clamping the side of the key
against the 90 deg fence. This invites the problem you are experiencing,
because the sides of the key are not milled carefully 90deg to the key
bottom. When the key is cut during fabrication the side of the key is not a
trustworthy 90 deg to the key bottom, rather it is a randomly somewhat near
90degrees. By clamping the key to a side fence, you bypass the key bottom
and use the random side as your index.
The way I approach it, the only surface on the key which is a trustworthy
index is the bottom of the key...no secondary references, they only
introduce inaccuracy. Even if your base is dead parallel to the router
runners, and your key bottom has no protrusions, when you clamp the side
you bypass the bottom index and make the side of the key the index surface.
Jim I
On Sat, Jan 2, 2010 at 6:57 PM, Greg Newell <gnewell at ameritech.net> wrote:
I’ve done all this that you suggest except replace the rubber button from
the toggle clamp. I’ve considered it before. Perhaps next set I’ll do that
to give it a try. Have tried more clamp pressure, less clamp pressure,
definitely parallel rails to platform. I remade that part twice now with
different materials. I replaced the right angle piece that supports the side
of the key with a heavy angle iron. Last effort frustrated me enough to send
me out and get the rotary planer. I’d really like to get this set up to work
though as it’s rather fast when it works. I hate key work too. I got into it
out of necessity though. The last set I sent out came back with 2 broken
keysticks.
Greg Newell
Greg's Piano Forté
www.gregspianoforte.com <http://www.gregspianoforte.com/>
216-226-3791 (office)
216-470-8634 (mobile)
http://www.wealthyaffiliate.com?a_aid=NNaYfMKd
<http://www.wealthyaffiliate.com/?a_aid=NNaYfMKd>
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Love
Sent: Saturday, January 02, 2010 6:46 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Key wood prep....was....Applying PVC-E
First make sure that it was set up right and that the guides are parallel to
the key platform. You have to adjust the clamp tension just right so that
it holds things in place but doesn’t push the key over on its side a bit.
Too much tension there can create a problem. Of course, not enough and it
can move but it doesn’t really take that much to hold it in place since
you’re not usually taking off very much material. You might consider
replacing the rubber bumper on the clamp with something slightly firmer. Be
sure that you don’t have a key bushing protruding beyond the bottom level of
the key so it can’t sit flat on the platform. I tend to do this operation
after I’ve removed the old bushing but before I’ve put in the new ones.
Bottom line, I hate key work.
David Love
www.davidlovepianos.com <http://www.davidlovepianos.com/>
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Greg Newell
Sent: Saturday, January 02, 2010 3:16 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Key wood prep....was....Applying PVC-E
David,
I have one of these and find it horrible to work with. I
consistently get a slanted top after running the router over the keytop. Any
ideas as to what my problem might be? Ugh, perhaps that’s too open ended.
Any guess as to what I might be doing wrong with this set up? Thanks!
Greg Newell
Greg's Piano Forté
www.gregspianoforte.com <http://www.gregspianoforte.com/>
216-226-3791 (office)
216-470-8634 (mobile)
http://www.wealthyaffiliate.com?a_aid=NNaYfMKd
<http://www.wealthyaffiliate.com/?a_aid=NNaYfMKd>
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Love
Sent: Friday, January 01, 2010 10:15 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Key wood prep....was....Applying PVC-E
I use this set up with a router. Just the router base is pictured but you
adjust the router in the base to get the depth of cut you want.
David Love
www.davidlovepianos.com <http://www.davidlovepianos.com/>
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of erwinspiano at aol.com
Sent: Friday, January 01, 2010 5:59 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Key wood prep....was....Applying PVC-E
On a different subject, how do all of you mill and prepare the top of the
key prior to gluing on tops.
Dale Erwin
--
grandpianosolutions.com (under construction)
Shirley, MA (978) 425-9026
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100102/2c3fc68d/attachment-0001.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC