[pianotech] Jack Sanding

[Ron Overs]

Hi Jon and all,

Jack/Rep alignment can be a problem. With new 
wippens I rebush the flanges, rotating the 
bushing cloth joint in each side to be 180 
degrees from each other to move the centre pin 
alignment in the direction I want the pin to 
move. So, for the side in which I want the centre 
pin hole to be higher, I rotate the bushing cloth 
so the the cloth joint is on the top, and vice 
versa for the side I want the pin hole to be 
lower. It works. I've never been a fan of bending 
the centre pins to get things aligned.

Ron O.

>Working on an 1888 Bluthner and many jacks are 
>rubbing on the side of the rep lever. They're 
>rather wide so twisting the rep support post 
>would be tricky and tapping caused one to break.
>
>Since the jacks are plenty wide I decided to 
>remove a little from the side. Here's where  320 
>grit PSA sandpaper on one side of plastic card 
>stock fit between jack and rep lever and removed 
>sufficient material from the jack.
>
>In the photo, the 1st & 2nd jacks had the left 
>side sanded. They were close like 5 & 6 are.
>--
>
>Regards,
>
>Jon Page
>
>Attachment converted: Powerbk HD:jack sanding strip.jpg (JPEG/«IC») (00B5EF45)


-- 
OVERS PIANOS - SYDNEY
    Grand Piano Manufacturers
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mailto:ron at overspianos.com.au
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