Yun's Piano Tuning and Service
  • Home
  • Work
  • Life
  • About

Glue in Steinway A3 Pinblock

1/6/2023

0 Comments

 
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.
0 Comments



Leave a Reply.

    Archives

    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

Powered by Create your own unique website with customizable templates.
  • Home
  • Work
  • Life
  • About