[pianotech] CA pinblock with tight bushings

[Mike Spalding]

Joe,

Thanks for your experience, and your encouragement.  I'm going to try it 
if the customer decides to go ahead.  I'm curious why the long drill 
bit.  I figure 3/8 depth of hole plus about 1" of exposed pin, a 
standard jobber's bit should be long enough??

Keith, I suppose this is just personal preference, but I'd rather drill 
228 holes than flip a 6' 6" grand that's sitting on a stage truck.  
Thanks for the reminder about turning the pin - I have done that in the 
past, and it did seem to help, although it doesn't help tuning stability!!

Dean, if this project flies you'll get your report!

Mike

On 2/14/2011 1:28 PM, Joseph Garrett wrote:
>
> Mike asked:
> "During a recent thread on CA for pinblocks, someone mentioned the idea
> of drilling a small hole down through each bushing to improve the flow
> of CA to the block. I believe this person had not tried it yet, but was
> considering it. I have a situation (newish Asian grand, tight bushings,
> loose block) where this might be the only way to get the CA where it
> belongs. Has anyone tried this technique, and if so, with what results?
> thanks"
> Mike,
> I think that was me. Good news....I have tried it and it works very 
> well! I drilled a 1/16" hole down through each bushing. I had to do it 
> on the piano, as it was an English Thang that had conical shaped 
> bushings! BTW, this is my very most favorite upright in my collection. 
> It had suffered some really traumatic conditons while out on loan. 
> (grrrr!)
> I used a 12" - 1/16" drill bit, (Ace Hardware, I believe the brand is 
> Hanson), and a light weight corded variable speed drill. It's a bit 
> time consuming, but the ease that the CA gets into the pinblock, far 
> out weighs that, IMO! I put the piano on a tilter to make it easier. 
> Worked like a dream.
> Good luck,
> Joe
> Joe Garrett, R.P.T.
> Captain of the Tool Police
> Squares R I

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