Originally Posted by
Iride01
And far enough away from the fork crown that the heat of brazing doesn't bother it.
If you get everything properly clean and close fitting you can use silver solder instead of bronze, significantly lower melting point so no risk of the steerer moving in the crown, and within the ability of a propane torch rather than needing oxy-fuel. I'd go with 7/8" insertion on each side i.e. the width of the inserted tube. Just be sure the solder flows fully, so you can see it all around the other end of the joint.