10/01/2024
This is a job that leaves tomorrow. I hope some get some use out of this:
Should this have had a graft? Yes. Was it financially sound to do one, no... some of what follows may seem overly fiddly, or pedantic, or like it might take a ton of time. Bear in mind that l'm set up for, and do well with rapid prototyping of tooling, and digital fabrication.
The instrument is an early 1900s American violin. The owner bought it with a broken peg box. I initially suggested just gluing it and installing CF rings, which I still believe would have been plenty. The owner wanted more, so l installed a threaded rod to act like a shear plate. The rod also serves as a mechanical joint. I have previous posts in my Instagram profile showing this.
To drill the hole, I drew up a quickie 3d printed drill guide. Also needing to clamp a sacrificial piece of wood, I modified a C clamp to sit inside the pegbox, and fabricated a clamping caul out of instamorph.
Scanned and milled inserts disguise the rod and add some more strength.
I hope you find this useful and get something out of it. Some further descriptions are below.
