TB3 is a wood glue no good for metal to wood.
A 24 hour general purpose epoxy is want you want. Hot melt works too but I much prefer a decent epoxy for the work time. Stay away from any 5 minute set epoxies they are weak.
BUT above all the number one reason points loosen is that an air bubble is trapped in the point
If you use taper fit points cut your shafts point taper. Push fit (no glue) a point onto the shaft, mark a pencil line around the shaft . Remove point. Take a small sharp saw (a fine hacksaw works) and cut a shallow groove up the shaft to your pencil line and a 1/16th past.
Now get degrease your points in a solvent. allow to evaporate. Heat up points, to the point where you can just keep hold of them! Get your glue ready and apply a little in the point. Clamp shaft in a vise and fit the point. I normally clamp mine in a fold of leather. Take a small hammer and tap the point, the note will change as you tap......then the magic happens and a little air bubble will travel up the groove as well as any excess glue, one final tap and you will hear that the point has fully settled onto the shafts taper.
Trust me if you do this correctly you will literally never have a point come off again.
The groove lets the excess glue and the trapped air out, these two things can work a poit lose. Its not really the glue used but the method of seating that matters most