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jamesp
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Joined: 08 Jan 2007
Posts: 31
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 Posted: Thu Feb 28, 2008 10:00 pm Post subject: Cracks around bridge pins |
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| During restringing I've noticed some small cracks around the bridge pins on some notes. These are very small (about 1mm long, coming out from the pin itsef). I tried removing and replacing a pin with pliers to see how tight it was - it wasn't overly difficult to remove. How much of a problem is this? I'm concerned that I may have a problem with false notes when restringing. There are a few false notes already but I'd put that down to the surface rust on the strings. |
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Barrie Heaton
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Joined: 30 May 2003
Posts: 2194
Location: Lanc's
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| Posted: Fri Feb 29, 2008 8:15 am Post subject: Re: Cracks around bridge pins |
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| jamesp wrote: | | During restringing I've noticed some small cracks around the bridge pins on some notes. These are very small (about 1mm long, coming out from the pin itsef). I tried removing and replacing a pin with pliers to see how tight it was - it wasn't overly difficult to remove. How much of a problem is this? I'm concerned that I may have a problem with false notes when restringing. There are a few false notes already but I'd put that down to the surface rust on the strings. |
You need some very viscose epoxy glue heat it up and with a dropper put a few drops on the pin it will run down and fill the crack leave it to dry then clean off the glue on the pin. once you get the hang of it you will have very little on the pin or the bridge.
You can do this with the string tension down and move the strings to one side - it is better done before you restring.
I have removed a full set of bridge pins filled the holes with epoxy re-drilled and repined.
Barrie,
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Barrie Heaton
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jamesp
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Joined: 08 Jan 2007
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| Posted: Fri Feb 29, 2008 12:39 pm Post subject: |
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| Thanks Barrie. |
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Barrie Heaton
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Joined: 30 May 2003
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Location: Lanc's
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| Posted: Fri Feb 29, 2008 4:56 pm Post subject: |
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Araldite will do it when you heat it up it goes very viscose I use to use an old tobacco tin lid and a cig lighter, if you have not got a dropper a cocktail stick will do just takes a bit longer
Barrie,
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Barrie Heaton
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Openwood
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Joined: 19 Feb 2006
Posts: 457
Location: UK
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| Posted: Fri Feb 29, 2008 7:46 pm Post subject: |
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| What are false notes? |
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Barrie Heaton
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Joined: 30 May 2003
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Location: Lanc's
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| Posted: Fri Feb 29, 2008 8:10 pm Post subject: |
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| Openwood wrote: | | What are false notes? |
A pain 
You will not find too many on your Yamaha in the treble but you will in the Bass
Find a Becy grand go to the treble play a note then mute off 2 string it will sound like a unison out of tune its got a wa wa and not a pure clean sound
Barrie
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sussexpianos
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Joined: 19 Aug 2006
Posts: 275
Location: East Sussex
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| Posted: Sat Mar 01, 2008 10:20 am Post subject: |
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or a Bechstein upright. For a make who has a good reputation, they sure didn't string well. Or was it intentional??
The main thing to safe guard against false strings is to not twist the wire when stringing, tap the string down ( not with a screw driver!) on the bridge at both pins and the hitch. You can get black epoxy at some places which looks OK with the blackend bridges. |
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mdw
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Joined: 05 Jan 2008
Posts: 240
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| Posted: Sat Mar 01, 2008 11:55 am Post subject: |
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| sussexpianos wrote: | | You can get black epoxy at some places which looks OK with the blackend bridges. |
Homebase do it called chemical metal, used it on a different job. |
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PianoGuy
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Joined: 21 May 2005
Posts: 1451
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| Posted: Sat Mar 01, 2008 12:50 pm Post subject: |
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| sussexpianos wrote: | | or a Bechstein upright. For a make who has a good reputation, they sure didn't string well. |
They didn't do much well really, and they're still overpriced for what they are. When they can build a Zimmermann at a sensible price it sure makes the Bechstein branded piano look pricey.
I am a fan of only a few of their designs, and the rest are also-rans bought by the kind of people who buy German products just because they feel they're better. As for the older ones, it rather puts me off that Hitler was a fan of them. His taste in general was almost as shite as his politics. |
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Barrie Heaton
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Location: Lanc's
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| Posted: Sat Mar 01, 2008 1:40 pm Post subject: |
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| sussexpianos wrote: | | or a Bechstein upright. For a make who has a good reputation, they sure didn't string well. Or was it intentional?? |
There are those that say it was intentional
I have found if you take out the agraphs clean them with a pipe cleaner attached to a drill dipped in some brasso polish the holes they restring very well
Barrie,
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jamesp
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Joined: 08 Jan 2007
Posts: 31
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| Posted: Sun Mar 02, 2008 11:27 pm Post subject: |
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| Well I've tested the "araldite method"; I've done a trial restring on two adjacent notes. I removed all the bridge pins and glued as per Barrie's suggestion on one note, but didn't on the next one as there was a hairline crack but barely visible. Even so, the difference between them with new wire is quite apparent. The note with glued pins sounds much more pure. There are some beats to the one I didn't glue. Evidently the quality of termination on the bridge is extremely important - I think I'm going to be gluing every pin! |
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