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23 February 2007: A "Quick" Soundboard repair.
Part 4
***All repairs shown here are for illustration ONLY!!! Classicpiano can not and will not be held liable for any problems that arise for following and utilizing this information!!! By reading this material and/or clicking any follow-up links below, you agree to hold Classicpiano harmless. ***
 This is the final frontier, done! Well, I've skipped a bit of detail, all of these pictures were taken after the fact. What you see here is the hole, actually about 1- 1.5MM in diameter, just large enough to accommodate the tip of the glue injector syringe. Once injected, the glue can be seen squeezing out either side of the rib. Then it gets wiped immediately with a dampened rag.
Before this picture was taken, the soundboard was barely visibly curled away from the rib. It has since been reglued. This wood glue is miracle stuff and holds a lot of pressure. After this picture was taken, I lightly steel-wooled the area around the repair and gave it a quick mist coat of clear satin lacquer, used as a sealer. After shooting with lacquer, the scuff marks in this picture become invisible.
There is a fine balance between showing what actually happens versus what I've shown here. I do not take pictures when the glue is just applied, it would steal precious time from cleaning up excess glue. Time is quite precious once you've applied the glue, there is a very small window of time to work with the glue before it tacks and then starts to dry. Once it tacks, it is pretty much done, no more moving the work around.
What I did not mention was the drying time. I typically would glue two joints per day to let them setup properly. Like other types of work, this was a quick repair in that it took probably about 6 hours, over a period of a week. Since we usually work on more than one piano at a time, it's not a problem. There is nothing worse than gluing a joint, only to have it come apart because it did not have sufficient drying time, it has happened before. Always give your glue joints plenty of time to cure before disturbing the repaired area.
I've also skipped a lot of detail as to what happens when and how..... buy the upcoming book!
The End!
A story by Tom & Gayle
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