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#2957801 03/16/20 07:00 PM
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I don't remember who wrote the wonderful note about "brushing hammers" but today we decided to try it on our Yamaha GC1 and it worked miracles! The piano is now warm instead of harsh and brilliant. Thank you to the generous person who wrote the note!


John Shelton
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I always clean piano hammers using different paint brushes:
First I use toothbrush with shotly hard-bristled
Then I use different types of dye brushes with different pile lengths.
It is necessary to achieve a condition of the hammer so that dust does not fly out with any brush touch, I'm think.
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Max,
My understanding of brushing hammers is that of using a brass bristle brush. This is to fluff up the felt which paintbrushes would not do.
Ian


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Originally Posted by Beemer
Max,
My understanding of brushing hammers is that of using a brass bristle brush. This is to fluff up the felt which paintbrushes would not do.
Ian

hi, Ian
I understood you. The paint brushes and toothbrushes would can used too. It's many less harmless to fluff up of a hammer that. But a hammer would be better after that operation, I'm think.
regards,

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Originally Posted by Beemer
Max,
My understanding of brushing hammers is that of using a brass bristle brush. This is to fluff up the felt which paintbrushes would not do.
Ian

That's what we used. It took about 1/2 hour to remove the action, do the brushing and put the action back in. Brushing cleaned and very slightly fluffed the felt. When finished we used compressed air to blow the dust out of the action. I understand this method of voicing only lasts for a short time but it certainly worked on our piano. We are both extremely pleased.


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I use this method (often referred to as "sugar-coating") routinely in several instances:

1) Right before a concert (lasts for about 3 minutes but the artist loves it and makes them confident so they play better).

2) On crummy pianos that can't actually be tuned anyway (makes it sound better than it deserves).

3) When a client wants to discuss voicing (down) a bit, I will do this as a quick demonstration of what some mild voicing might do for their piano. I tell them it won't last long, but if they like that then I can do a much longer lasting job later. (Like a preview...I'm not shooting the dark).

Pwg


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Originally Posted by P W Grey
I use this method (often referred to as "sugar-coating") routinely in several instances:

1) Right before a concert (lasts for about 3 minutes but the artist loves it and makes them confident so they play better).


Pwg

You are certainly right about the short duration of the effect. After an hour or so our piano is bright again. I guess I'll have to start needling. I'd get a tech to come and do a regulation if I could but we live too far out in the country and no one wants to make the long drive.


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John...So because you're out in the country and most techs are canceling all service calls anyway here are some procedures to try firstly with brushing but very carefully so as not to flex and break hammer head from the shank.
You can make basic voicing needling tools or just put a size 5 or so needle into a vise grip tool and leave maybe 1/8 or 1/4 (careful !!) inch exposed , support a short section of hammer shanks by putting a strip of wood underneath them close to the end of the shank so you can apply some downward pressure, firstly try a couple of notes in the 6th octave which are too harsh sounding and press needle gently into each of the 3 string grooves at the strike point of the hammer, put action back in piano and listen for results....



I use it on a lot of uprights after tuning just to mellow things down brush in one direction preferably towards you , more likely to break shanks if you go back and forth. also mostly on older Asian grands that are harsh toned no need to vacuum after it’s not like hammer filing, with practice you can go back and forth carefully esp in upper register and quite vigorously


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Thanks for your advice, I'm very grateful.


John Shelton
Shelton-Farretta Guitars
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