Don't, it is a mistake. Any glue can be sanded. The issue is that if the glue is harder than the balsa, balsa will be removed on either side of the joint faster than the glue. Ambroid is excellent, an old standard that still works well to day. Not for internal joints, but for external joints that will be part of the finishing process.
Well, "any glue"can NOT be sanded...if you ever tried white Elmer's, it sort of softens from the friction and starts balling up, on the paper and on the joint. I've been using yellow woodworkers' glue for several years for just about all my building. An occasional epoxy joint, GOOP for canopies/etc., otherwise nothing else, internal and external alike. I find no problems sanding/finishing it.
On the other hand, my finishes are not exactly what you'd call "front row"!--or even respectable by most modelers' standards: Minimal sanding, shrinky-dink the wings, a coat or 2 of primer on the fuse and tail, maybe 2 coats of color (maybe not), a little clear topcoat if it doesn't look shiny enough, and go fly! So I suppose if you're looking for a really good finish you shouldn't do as I do...
Topic: Sandable glue (Read 1405 times)
