In order to determine the extent of damage to the wooden structure, we perform a CT scan, tomography. The following gallery shows the repair of the upper part of the clarinet. Due to the uniqueness of this part, which we did not manage to replace with another from a manufacturer, due to intonation and acoustic properties we decided to repair this part as thoroughly as possible. To do this, it was necessary to detect all existing and incipient cracks along the entire length of this part.
Thanks to CT scanning, the beginnings and ends of cracks could be determined in the first place, and the depth of cracks was no less important. This information was used in the subsequent milling.
I attempted to summarize the benefits of the scanning in the following points:
- Clearly perceptible depth of cracks
- Detection of defects of previous repairs
- Detection of small cracks that could not be observed by common inspection
- Understanding the instrument construction and technology used by the manufacturer
- Deciding about the method of drilling some of the holes
- Confirmation of the success of the tone hole replacement
- Display of the shape of tone holes and their effect on intonation
- Internal drilling of the instrument
Based on this knowledge we can compare an older instrument from the same model line and observe how the instrument changes over the years depending on the playing.
CT scanning was performed by SolidVision sro www.3d-skenovani.cz