The soundboard was tapered (diaphramized in Steinway terminology). First contour lines were routed into the board, and then the board was sanded to the contour lines on the stroke sander.
Profile of countour lines tapers the board from 0.26″ to 0.33″
The video shows use of the stroke sander to achieve the taper by sanding to the contour lines.
Ribs were shaped to a radius of 60 feet, then glued to the soundboard using cauls and compressed air clamping pressure. The photo below shows the last rib in the cauls. Typically I clamped 3 or 4 at a time.
After the ribs were glued, a radius was planed onto the ribs. This is a craftsman touch. Few will ever crawl under the piano to inspect this detail.
The cobbler’s children go without shoes. But this piano technician is breaking out of that paradigm. New to my living room is a Steinway and Sons Model A-3 built in New York in 1922. After I completed three days of work on it, the piano is very pleasing to play. At some time, it will be completely rebuilt; but for now, it is a very nice “daily driver”, to borrow from classic car enthusiast lingo. That time will not come until the high-end restoration of the 6’3″ Charles Stieff (1911) is complete.
An update on the Rebuild of Stieff 28334 has been a long time in coming. I’ve been disappointed with my inability to focus energy on the project! But progress has been made.
Cauls for gluing ribs to soundboard. Note the concave or convex shape for top and bottom cauls. These are sixty foot radiuses.
Prior to working with the actual ($$) new sound board, a sound board mockup was prepared using inexpensive quarter-inch plywood. This step was taken to work out the bugs in the system before working with the new spruce board.
For the mockup, I used some clear fir as ribs that was available at no cost. The picture below shows a jig with a 60 foot radius for shaping the topside of the ribs.
Below, the mockup progressed with the ribs fitted to the frame.
The mockup continued by gluing “ribs” to “sound board”. A few issues were noticed, and I was glad that I did this mockup, so I could proceed with confidence. The cauls use mill hose pressurized at 30 psi. I’m doing four at a time, and progressively moving cauls to a new position as glue dries.
Below is the completed “trial soundboard” which fit well when placed back in the frame.
Wishing you could afford a new Kawai Studio Piano?
After complete reconditioning in my shop, this sweet Kawai studio plays like new. Smooth responsive touch. Lovely voicing. Full dynamic response. You can have it all — except for a new piano price and except for a perfect finish. This piano was manufactured in 1973, and the case shows wear, but we’ve touched it up and polished it so that it looks good. Not showroom good, but living room good.
– Re-shaped and voiced hammers to develop a lustrous tonal response
– Leveled keyboard
– Regulated the action, for full dynamic expression.
– Case repairs and touch up
– Cleaned and polished case
– Reconditioned pedals and trapwork
– Tuned to concert pitch
Come and play! A great buy for family with intermediate students! I like playing it!
The sale includes:
– One free in-home tuning ($120 value)
– Free “normal delivery” (No difficult turns, 4 or fewer steps) in Davis or Weber Counties ($250 value)
Vintage 1916 Chickering baby grand piano is a delight! I’ve recently done signifcant reconditioning work on this piano in my shop. Work has included:
– New keytops
– Reconditioned key frame
– Reconditioned top action
– New hammers
With this work complete, this 5’3″ baby grand plays expressively, with a premium touch.
This Kawai studio piano was built in Japan in 1973. I recently completed reconditioning of this fine piano in my shop.
I have performed the following services on this piano:
Re-shaped and voiced hammers to develop a lustrous tonal response
Fully regulated the action, for full artistic expression
Made minor repairs to the case
Cleaned and polished case
Reconditioned pedals and trapwork
Tuned to concert pitch
Upon completion of reconditioning, I’ve played this piano for many hours, and I have found it to be a delight. The action is silky smooth, giving the pianist delicate control and full dynamic response.
This piano is an excellent purchase for beginning and intermediate piano students. Kawai produced this model with the school market in mind. You will find later editions of this model everywhere in universities, schools, and churches. It’s simple lines make it a nice fit anywhere.
The sale includes:
– One free in-home tuning.
– Free “normal delivery” in Davis or Weber Counties. (No difficult turns, 4 or fewer steps to go up or down)
– One year warranty.
You’ll find new prices for a similar piano from Kawai today at about $6000.
I paused for a moment in my work this morning to realize that I was doing exactly what I wanted to be doing. Practicing the crafts of piano restoration fits me in such a fine way. This morning I was doing key work on an 1880’s Knabe grand, and while I applied my skill to restoration, I could pause to admire the work of craftsmen from 130 years ago.
James Michener is credited with the following:
The master in the art of living makes little distinction between his work and his play, his labor and his leisure, his mind and his body, his information and his recreation, his love and his religion. He hardly knows which is which. He simply pursues his vision of excellence at whatever he does, leaving others to decide whether he is working or playing.
I’m grateful that I can often reside in that zone.
This week I spent a day at a customer’s home in Ogden, regulating a Yamaha GH1 made in 1993. It was rewarding work for me, and drew immediate praise from the players in the home. The very talented 12 year old player smiled and said, “Oh! It’s so much easier to play now!” It’s a privilege to be able to do this work.
You can learn more about grand piano regulation in this article.
Here, I’ve attached an acrylic sheet on the action frame to simulate the strike point of the old hammers. Once marked, this will serve as a guide for the installation of new hammers. The guide also allows for simple measurement of bore angles.
I love pianos: as a musician, as a technician, and as a craftsman.
The joy of my profession is to bring out the best in every piano I encounter.
Words to Live by
The master in the art of living makes little distinction between his work and his play, his labor and his leisure, his mind and his body, his information and his recreation, his love and his religion. He hardly knows which is which. He simply pursues his vision of excellence at whatever he does, leaving others to decide whether he is working or playing. --James Michener