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Joined: May 2007
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What ones don't you know? I will tell you what they are!

Last edited by David Boyce; 03/18/21 11:15 AM.
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Here are the items numbere, with list below:
[Linked Image]

Last edited by David Boyce; 03/18/21 11:39 AM.
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1) Drop screw & Upright set-off screw regulator for screws with small spade tip.
2) Pin Vise, for holding small drills, broaches, knurled center pins etc.
3) Fletcher & Newman gooseneck medium star tip tuning lever.
4) Small round-nosed pliers, sometimes useful for making string loops.
5) Rubber wedge for grands, made from sticking two wedges back-to-back at the top. Gives added weight, and two tips, which can be used as single tip.
6) Tuning Pin Punch
7) Hammer shank drill for upright hammer butts.
8) Papps Mute
9) Tool for turning front rail "bat" pins.
10) Wire bending tool for check wires, damper spoons etc.
11) Upright set-off screws regulator for set-off screws with circular 'loop' ends.
12) Strip of felt for cutting to make upright hammer butt notch felt pads.
13) Wedge for uprights.
14) Fine tips for CA Glue tubes/bottles. Great for accurate dispensing.
15) Two thicknesses of flange cord.
16) Two thicknesses of loop cord.
17) Buckskin for upright catchers etc.
18) Two diameters of upright hammer shanks.
19) Bushing cloth
20) Strip of flange bushing cloth with ready-pointed tip.
21) Pieces of green and of red felt, different densities/thicknesses
22) Spare sharps
23) Spare flanges.

Last edited by David Boyce; 03/18/21 11:57 AM.
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Thank you dude, I don't know what
7) Hammer shank drill for upright hammer butts.
I cannot image why should shank drill the hammer butts....
and
11) Upright set-off screws regulator for set-off screws with circular 'loop' ends.
I think I have seen the screws with circular 'loop' somewhere

I am not professional technician, the piano shop I went has relocated to a very far place and also for Covid, so I just learned everything by completely disassemble one of the action on my Petrof purchased last year. I also understand the physic behind.


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Sometimes in older pianos, a hammer shank breaks right doan at the butt, and to fit a new one, you have to drill out the stump of the old one.

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There was a hint here about item 13 that has saved me a lot of trouble: With the wedges for uprights, tie a length of ribbon to the handle. That will keep them from falling down behind the action if they come loose. Also, I do not use such heavy handles, because they are more likely to fall out. You can get much smaller skewers for trussing poultry and such at grocery stores, and just stick them in the plain wedges.


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Originally Posted by David Boyce
Sometimes in older pianos, a hammer shank breaks right doan at the butt, and to fit a new one, you have to drill out the stump of the old one.
Oh I see,thank you!
Again a nice set, especially the tuning lever
I think Yegor will be happy to use them to fix most issues on his piano.


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I do not recommend drilling out hammer butts directly, rather, drill a small hole down the remnant of the shank, carefully put a drop of water in the hole (a bit of dishwashing soap helps it soak through the wood), and pull the rest of the old shank out. It is too easy to drill incorrectly. After the wood is soaked, you can use the drill of the proper size to get the rest of the wood out. Some people heat up a wood screw to pull it out. The heat helps loosen the glue.


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oh I see, I hope I should never replace any hammer butt...
But when I was a kid, one of my pianos was a Rippen, it has to replace a hammer butt just after 3 years of new piano purchase... (for max 1h/day)

Last edited by zonzi; 03/19/21 05:28 AM.

1970s' Petrof 125
youtube:https://www.youtube.com/channel/UCrY5TdJHAB6HAYYgdgQliww
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That's a good tip, for removing the stumps of broken shanks.

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Originally Posted by BDB
I do not recommend drilling out hammer butts directly, rather, drill a small hole down the remnant of the shank, carefully put a drop of water in the hole (a bit of dishwashing soap helps it soak through the wood), and pull the rest of the old shank out. It is too easy to drill incorrectly. After the wood is soaked, you can use the drill of the proper size to get the rest of the wood out. Some people heat up a wood screw to pull it out. The heat helps loosen the glue.
thanks, BDB

I drip hot water onto the remains of shrank hammer in the butt. After 1 hour I take an awl and everything is removed off there. It may not be professional, but this is how I do it.

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Rippen and their subsidiary Lindner used a bad plastic for their actions which failed. The same thing happened to some actions in the US.


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Even though the instruments from David haven't arrived yet, I'm already doing the first repair of my first piano!
I suggest you take a look at this.



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Good on you, David. That's a very kind and generous thing you did for this young man. smile

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Ouch! Subtitles are superimposed on the music!
Then I will lay out the sound of the instrument separately.




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hi Egor, nice videos, at the end, have you fixed them?
Can you please put the camera somewhere more static? it is difficult to watch when it is moving all the time. Thank you!

I saw this video which seems replacing the central pin, it has some steps more than what you did. I am not technician, I hope someone can guide you better. In this video, you will make use of the item 20 inside the kit David is sending you.


1970s' Petrof 125
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one suggestion: as a no tech, you should try your idea first with the key/action you almost never use on the piano( maybe the key on the extreme bass key of your piano). If it works, you can try with more important keys in the tenor part....


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A0 is used more frequently than C8

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Calm down, I already did everything, there was a problem that there was too much cloth near the shaft, so I drilled it. Thanks for the helpful video, I didn't know how to glue it!

Here, I've already unscrewed everything, soon I'll be boiling the bass strings in soap, putting all the mechanics back together and grinding the hammers.


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zonzi, I will take into account your request, I also find it difficult to look at when mounting, I feel dizzy!:)))


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