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Dial gauge way of adjusting glide bolts - Chris Chernobieff


I had this little dial gauge that's made for my Mill. I adapted it to adjust the glide bolts on a Piano keyboard. The dial is attached to a piece of wood which is clamped to the stretcher. Then a wedge is placed on top of the balance pins until it touches the arm of the dial gauge. Then with a tuning hammer the glide bolt id adjusted until the dial begins to move

 

Chris Chernobieff

Tool for leveling strings - Chris Chernobieff


 

That is a great tool for leveling strings, or at least identifying those that are not level.

 

Place the vertical movable piece over 3 strings and then (with the dampers up) pluck each string. Compare the ones that sizzle to the ones that don't The goal is to have all 3 sizzle with the same intensity. It is extraordinarily (and maddeningly) accurate.

 

Eric Johnson

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Clever and handy

December 19, 2019 - by Xuanheng Ma

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Grand piano leg prop designed by Steve McClard (McClard Bros. Piano Tuning)

September 25, 2019
 

Here's a simple design for a grand piano leg prop, adjustable from 26-30 inches. It's a simple design using four 2x4 with 18'' legs. The adjustment comes using a block between the opening at top center. After using it once, I just need to add felt to the opening at the top.
 

Dimensions

The two inner 2x4 are 26'' long. The outer are 30'' and 32'', which are larger than the ones pictured. Use your own design here, making sure to measure clearances for the piano you are fixing. Keep clear of the soundboard, of course. The inner adjustment wood is then made with 2x2 and a small piece of lauan. Cover the inner top with felt, as well as the top of the adjustment piece. Add a taller adjustment piece for higher grands. Take it away for lower grands.

I think there are three sizes of grands (24, 26 and 28). I added two inches to each setting to keep the leg off the ground an appropriate amount. It worked perfectly the first time I used it.

Really?

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