I'm glad you asked! We have a video showing one method using CA glue that you can watch here: https://youtu.be/85YuDF2_n9Q
The CA glue method works great for mixed material blanks, but is not recommended for non-stabilized wood blanks.
Alternatively, you can also use either 5 or 15 minute epoxy spread inside the blank as well as on the tube.
Either way, the two most crucial elements are to
1. get the glue on all parts of the tube and
2. let the glue dry overnight to ensure the glue has fully cured for the best bond