Author: Julian ibiza
Date: 2023-12-09 14:12
This may be a superficial crack inasmuch as it hasn't reached the bore, but it's a long structural crack extending towards the tenon. When a piece of wood cracks, then it's natural tensions and movements from climatic variation become focused there, and will continue to be until it is well reinforced with pins. Ie. the crack will work,opening and closing minutely. If repaired only with glue, then that glue's bonding strength must be greater than that of the interlocking wood fibers that tore, forming the crack in the first place. A lot to expect of any glue , especially when the two surfaces can't be separated to clean and properly apply it. Super glue is used in conjunction with pinning, really only as a filler that will flow into the hairline crack to prevent air leakage. It is of itself a poor wood glue, lacking elasticity and good bonding to wood. Filling such an extended crack without pinning is likely it make it extend still further, as you are effectively putting a non bonding wedge into a working crack, without having arrested the crack's movement. While the crack may not now reach the bore, it likely will if filled without pinning. Pinning should leave the instrument stronger than new and I would strongly recommend you do it before the crack extends any further.
Julian Griffiths
Tel. 34 696 798 853
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The Clarinet BBoard
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