Rattle when you shake the tube only occurs when the glue gets loose. Many times the bond fails and the glass simply separates from the base. It can vibrate when playing. If you press down on the envelope, it doesn't allow it to vibrate.
The thing that takes some experience is how much soaking is needed to soften the glue. If you don't do it long enough just the surface softens and the bond is not as strong. If it doesn't work the first time, not a big deal, the procedure can be retried. I figure that it is worth a shot. It never hurts to have a backup set (of JJ's).
The thing that takes some experience is how much soaking is needed to soften the glue. If you don't do it long enough just the surface softens and the bond is not as strong. If it doesn't work the first time, not a big deal, the procedure can be retried. I figure that it is worth a shot. It never hurts to have a backup set (of JJ's).