Yun's Piano Tuning & Repair
  • Main
  • Tuner's Life
  • Bio

Glue in Steinway A3 Pinblock

1/6/2023

 
This pinblock has gone through dry fitting and adjustments in piano, ready to be glued in. Apply epoxy on glue surface. We use Westsystem Epoxy. It is very toxic so a N95 mask or respirator is necessary. Use the plate and vertical clamping pressure to press down pinblock. Use stretcher protecting board for the horizontal clamps to grab on.
The Tape & Drape at bass and treble helps protect surface from glue squeeze-out. The jack in the middle pushes up pinblock to be flush to the under surface on stretcher. But before this, we made sure the stretcher is not bowed. If the stretcher is bowed up or downwards, it needs to be clamp-pressed to be flush to the under surface of pinblock.
The next morning, epoxy is dried. use heat gun to soften squeeze-out on top then chisel off. 
Drill and glue in dowel from pinblock to case and stretcher to strengthen the bond. The glue is dry usually in an hour. Trim the extending part of dowels when glue dries.

Comments are closed.

    Archives

    January 2025
    December 2024
    November 2024
    October 2024
    September 2024
    August 2024
    July 2024
    June 2024
    May 2024
    March 2024
    February 2024
    January 2024
    December 2023
    November 2023
    October 2023
    September 2023
    August 2023
    July 2023
    June 2023
    May 2023
    April 2023
    March 2023
    February 2023
    January 2023
    December 2022
    November 2022
    October 2022
    September 2022
    August 2022
    July 2022
    June 2022
    May 2022
    April 2022
    March 2022
    February 2022

Proudly powered by Weebly
  • Main
  • Tuner's Life
  • Bio