Originally Posted by
3alarmer
...using a standard pop rivet is problematic because the interior of the rivet projects far enough into the head tube to interfere with the steerer tube.
It would probably work if you could find some way to flatten the interior projecting stub. The space between these two tubes is pretty tight.
I have used copper rivets in the past and just used a half round file to file them down inside the headtube after I had set the rivets.