Gluing or not gluing wedge when making scales, that is the question, vintage razors seem to come without glue but I have seen videos of modern makers using glue, so maybe a compromise is a wise choice ie gluing but only one side of wedge
Traditionally you don't glue. One it allowed the scales to flex better since tangs were tapered. Two, with proper peening you can move the blade to adjust how it centers and is harder if it is glued.