This is a trial. A better process is yet to be developed with advice from colleagues and professionals.

The process was initially orally instructed by our shop owner Mr. Jude Reveley. On the first time, it was done with a drill press. But the drill press table is only so long. The holes at and near the two ends of keyframe are hard to drill straight or perpendicular to the keyframe. This is the second time of glider studs installation. It is done by hand. Hopefully a more accurate and efficient way or ways can be developed through time and with advice from colleagues and professionals. 

The Blüthner piano nosebolt nuts require a special ​spanner for extraction. One nut has two slots as shown in pictures. 

The raviolis in pedal boxes are usually beat up and full of dust, upon which the back of a pedal rests. To make new ones, we need: