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Joined: Dec 2012
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I wanted to make this a topic because on an earlier thread several of us were discussing whether the small amount of weight removed when shaping grooved hammers will be noticed when you play the piano.
Today I was re-pinning and shaping the hammers of a Korean "mystery" sluggish grand. When I have the hammer unscrewed I am removing the staple, (0.1gr) using a knife to pear up the shoulders, (0.2gr) deep needling the bass and tenor hammers, and re-pinning the hammer centers. After the hammers are all back on the frame I will even up the shape by gang filing, (0.1gr). I am limiting the narrowing of hammers on this piano to notes 52-88 to reduce the clients cost of the entire job.
When I play chromatic scales at what would be mezzo-piano, even with this small amount of weight change, the touch is easier to start moving and the key returns quicker. The change to down-weight is in the (2.0gr) range. I can more rapidly sense how fast the hammer is moving when I start the keystroke, and can relax sooner in the keystroke to let my finger carry the key to bottom. The quicker return lets me move to the next note with more time to sense how fast I am moving the next hammer.
Depending on the dynamic gradient a set of hammers possess, resetting the down-weight of an action often is needed to produce a secure range of dynamic control for a pianist when reshaping hammers. Altering the down-weight by 2 grams of an action by key-leads would not be noticed-but reducing the weight of a hammer by (0.5 to 0.7gr), which also reduces touch weight by 2.0gr will be readily noticed when playing.
Technicians need to develop a feel for this to be able to serve clients well. They need to discuss this change with the client when they propose shaping worn hammers, because it affects the cost.
In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: toneman1@me.com
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Altering the down-weight by 2 grams of an action by key-leads would not be noticed-but reducing the weight of a hammer by (0.5 to 0.7gr), which also reduces touch weight by 2.0gr will be readily noticed when playing.
I'm think so need not do. Because any change a hammer ( the weight of a hammer by (0.5 to 0.7gr) is great not understanding for a client. Yes, a hammer should be is standart thing in a piano. I always make a deleting hammer's groove only. If we will do it's and a hammer will kick so earlier, I'm think so To remove as low as possible felts with a hammer http://youtu.be/sf1LHhRMwhg
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Joined: Jun 2001
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Absolutely, Ed. I encounter heavy actions all the time, and feel sorry for the kids trying to make music with them. Can you describe the best way to take a knife to a hammer?
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I would like to know that, too. I've never heard of taking a knife to a hammer for reshaping before.
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Once the staple is removed, you can cut from the shoulder down the hammer to the edge of the felt on the moulding. It pears up the shape quickly and with almost no dust. Then when you remove the string marks with sandpaper you are not "fighting" with the felt on the shoulder. You need to finish shaping with sandpaper strips and a short straight edge to guide uniformity.
Hammer makers use knifes to "skive" the felt when making hammers and they trim the shoulders after gluing the strip to the mouldings before separating each hammer.
I will have to travel, burn and space hammers on this action because I unscrewed them from the frame to re-pin.
In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: toneman1@me.com
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I wanted to make this a topic because on an earlier thread several of us were discussing whether the small amount of weight removed when shaping grooved hammers will be noticed when you play the piano.
Today I was re-pinning and shaping the hammers of a Korean "mystery" sluggish grand. When I have the hammer unscrewed I am removing the staple, (0.1gr) using a knife to pear up the shoulders, (0.2gr) deep needling the bass and tenor hammers, and re-pinning the hammer centers. After the hammers are all back on the frame I will even up the shape by gang filing, (0.1gr). I am limiting the narrowing of hammers on this piano to notes 52-88 to reduce the clients cost of the entire job.
When I play chromatic scales at what would be mezzo-piano, even with this small amount of weight change, the touch is easier to start moving and the key returns quicker. The change to down-weight is in the (2.0gr) range. I can more rapidly sense how fast the hammer is moving when I start the keystroke, and can relax sooner in the keystroke to let my finger carry the key to bottom. The quicker return lets me move to the next note with more time to sense how fast I am moving the next hammer.
Depending on the dynamic gradient a set of hammers possess, resetting the down-weight of an action often is needed to produce a secure range of dynamic control for a pianist when reshaping hammers. Altering the down-weight by 2 grams of an action by key-leads would not be noticed-but reducing the weight of a hammer by (0.5 to 0.7gr), which also reduces touch weight by 2.0gr will be readily noticed when playing.
Technicians need to develop a feel for this to be able to serve clients well. They need to discuss this change with the client when they propose shaping worn hammers, because it affects the cost. +1
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Joined: Feb 2011
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Deleted.
Last edited by Withindale; 02/28/14 05:09 AM. Reason: OT
Ian Russell
Schiedmayer & Soehne, 1925 Model 14, 140cm
Ibach, 1905 F-IV, 235cm
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