[pianotech] Ironing bushing cloth - Best Bushing Job Ever

[David C. Stanwood]

Hot Hide Glue is the glue of choice here for two reasons:

1. It's easy to remove down the line.

2. When applied to the felt it cools off and gels before it has time 
to soak too deeply into the cloth thereby reducing the resiliency in 
the felt.

Ironing, by the way, reduces resiliency while increasing density so 
care is needed not to rely too much on the iron.

David Stanwood

>Glue that soaks in too deeply can/will cause squeaks and clicks as 
>the glue in the cloth rubs against the keypin.  We want a very firm, 
>yet resilient surface against the keypin, not a hard unforgiving 
>one.  We're going for adhesion here, and not much "penetration" into 
>the cloth is necessary.
>
>William R. Monroe
>
>
>SNIP
>
>>Tell me, though, why do we NOT want the glue to soak in?  Or will 
>>it adhere just as well to ironed bushing cloth?
>>
>>Also, do you iron both sides, then?
>>
>>Thanks,
>>
>>John Dorr