[pianotech] CF Stein

[Terry Farrell]

> What do you think all those holes in plates are for, to whistle at high speed?


For looks! Seriously. I've never cooled liquid cast iron, so I had no idea. I've always thought they were decorative and to perhaps let some sound out. A party guest at my home some years back thought they were drink holders! Seriously.

Thanks for the info - ya learn somethin' every day!

Terry Farrell


On Nov 16, 2012, at 1:25 PM, Ron Nossaman wrote:

> On 11/16/2012 8:54 AM, Terry Farrell wrote:
> 
>> What on earth is a "shrink hole"?
> 
> What do you think all those holes in plates are for, to whistle at high speed? Cast iron shrinks as it cools. The holes are to balance resulting stresses and minimize warpage.
> 
> Ron N