Plate handling,

Warren Fisher fishwar@bellsouth.net
Sun, 26 Jun 2005 22:00:46 -0500


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Thanks Mike,
Getting help is a given.  I just removed the plate from a small grand using "tongue depressors" or "craft sticks" taped to the inside of the rim. They are about 1/2 inch wide, 1/32 inch thick and 4-5 inches long that I got from Walmart for something else.  The stick rests on the plate support, are spaced on 3-4 inch centers and were taped over the top of the rim. See attached photo.

Coming out was easy, but I am sweating dropping the plate on the rim when it goes back in like the last time I put one back [some unwanted veneer work there].  I don't have enough overhead height in the shop for a chain hoist so I am using a shop crane which is scary when it goes down to say the least! It works like an auto jack.

I have some longer sticks that would protrude above the rim about an inch and would line up the plate before it could get to where it could scratch anything. This would allow me to press the tail of the plate lower and then hold it against the sticks on the tail while my partner guided the front of the plate into place.  This would allow the maximum clearance for the front rim and stringer.  I like the idea of the guide rods. 

Another Idea that just occurred when you mentioned "uncured finishes" is to first make a u-shaped cardboard cap for the top of the rim and either tape the sticks to the under side of the cardboard or make stick-sized notches in the cardboard and put tape on both sides to suspend the sticks.  The cardboard would of course have to be un-corrigated in order to be thin enough.

I will appreciate your critique of these ideas.
Thanks in advance,
Warren

Warren Fisher- RPT
Navy Retired - Slidell, Louisiana 


From: Michael Spalding 
To: fishwar@bellsouth.net, Pianotech
Sent: 6/26/2005 2:52:35 PM 
Subject: Re: Plate handling, was Rebuching keys with thin mortise


Warren asks:
I have a question. How do you protect the inside of the rim while you are cycling the plate in and out. I have some ideas but would like to know what the consensus is on it.
Any or all of the following:
1.  carefullly align the hoist to the piano (or the piano to the hoist), including rotationally.
2.  slip some thin plastic (sections cut from trash can, scraps of vinyl siding, etc.) between the plate and the rim in the areas most likely to contact.  You can tape them to the rim with masking tape on old well cured finish, but not if it is very fresh and fragile.
3.  Stick some 1/4" diameter brass or steel rod through the plate holes into the rim bolt holes for gross alinment.
4.  Station an assistant across from you.
5.  Go slowly and check alignment often.
6.  The first time the plate is out, check around its perimeter for any roughness or bumps, sand or grind them smooth.

Mike
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