In making a bow, a glue joint must not soften or crystal-lize; it must be a bond as strong or stronger than the materialsbeing glued. It must be immovable and unaffected by tem-perature or humidity; it must be elastic enough not to crystalor powder under strain. The old glues, when weighed in thesebalances, were found wanting.
The war caused a great improvement in adhesives and thecreation of new ones including casein. Casein has been per-fected to the point of meeting most of these exacting demands.Science has evolved many new plastics including fibre glass,So, with these new creations and adhesives that will hold themtogether, the bowyers have come up with some exceptionallygood bows.
