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

Perimeter Bolts installation

6/13/2022

 
We are using WNG perimeter bolts instead of the original ones. First, make sure the plate is at the original/accurate location. Mark for the bolts with transfer punch. Drill for the bolt body. Drilling with the plate in is to double secure the hole location just incase the drill bit slips. 
Here are the WNG perimeter bolts. The long bottoms go under plate. They can be screwed up and down to adjust plate height. The short tops are to lock down the plate. We cut a notch on the tip of each bolt and wax it for easy installation. The notch functions as a tap. 
All the bottom parts are punched down now. We use are pressure instead of elbow grease. Is it cheating?
Next, modify the plate where perimeter bolts go in. The WNG bolts are flat with washers. The original counter sinks on plate need to be filled for the washers. Before filling, chase them with 1/2" drill bit for the new 1/2"ish bolts.
Wax 1/2" dowels, insert into bolt holes, maybe put tape on the bottom. then fill counter sinks with epoxy. Let dry over night.
The next morning, epoxy is dried. Sand flush by hand or machine. The middle picture shows a flat WNG bolt and washer. Now it'll fit much better on top of plate. Next, the plate can be sanded, sprayed with gold, and installed.

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