Monday, December 10, 2012
Tuesday, November 13, 2012
My sound board press is unique as it also doubles as a bridge press. After appling glue, I fasten the bridge to the board with temperary screws through the ribs where dowels will be installed later. The the board and bridges are placed in the press to add additional clamping pressure along the entire plane of the bridge.
Wednesday, November 7, 2012
After the bridge cap is sanded, templates made from the original caps are located on the new cap and the information transfered to the new bridge. The bridge is then again dry fitted to the soundboard, and the soundboard is again dryfitted to the piano. The location of the marks for the pins are checked against the plate hitch pins and agraffes, and any necessary adjustments are made. On this piano one section was out od alignment by about 1/4". Yes, the factory does make errors, and ther rebuilder has the opportunity to correct them.
Thursday, November 1, 2012
Setting the bearing on a new sound board is one of the most demanding steps in the rebuilding process. An over simplified description of setting the bearing is this: adjusting the height of the bridge caps to a height that causes the strings on the strung piano to cause downbearing on the soundboard. It is important to have enough, but not too much. It is also determinded to some extent by the amount of crown in the board. So how do I accomplish this?
Tuesday, October 23, 2012
Before setting the bearing on a new soundboard it is necessary to fit the new pinblock to the plate, and to relocate the plate and pinblock assembly into the case of the piano. The plate and pinblock need to be not only in the correct position left and right, but must also be at the proper height on all planes.
Thursday, October 11, 2012
Part of the restoration process involves recapping the old bridges. This is done by removing the original hard maple bridge caps and all the original pinning and notching. This process is complicated in the model D because the bass bridge is attached to the treble bridge. The laminated bridge body is constructed at the factory with plies of vertical maple being pressed in a caul to the "U" shape you can see in the picture. These pieces of maple are one continuous piece from note one to note eighty eight.
Friday, October 5, 2012
when the are glued to the soundboar
Wednesday, September 26, 2012
After the soundboard is removed from the piano, I prepare it for use in duplicating it onto the new soundboard. This requires removing the bridges and also doing some superglue repairs to the old board as it is literally "broken" out of the piano. Especially in Steinway pianos I am very careful to accuratly duplicate the original soundboard (minus factory errors) so that it becomes a genuine duplication of the original.
Thursday, September 20, 2012
I have recently begun a major restoration of a nine foot Steinway concert grand piano. This is a total restoration including a new soundboard and refinishing. The pictures show the varios stages oftear down.
Wednesday, September 19, 2012
Wow, It's been almost a year since I have posted anything about shop happenings. That is partly because there hasn't been a lot of shop activity the past year. But that is changing, as I have several project in progress. I will soon be highlighting a Steinway D #411101 that has just begun, and will be a total restoration and refinishing.