I've always understood that the A7 chassis were hot rivetted. But the process is the same when riveting 'cold' in a production environment.
If you can't find suitable half round rivet snaps for setting rivets in the home shop, you can make them by hammering a suitable size ball bearing into the end of a length of red hot silver steel -I think this stuff is called 'Drill Rod' on your side of the pond.
If you can't find suitable half round rivet snaps for setting rivets in the home shop, you can make them by hammering a suitable size ball bearing into the end of a length of red hot silver steel -I think this stuff is called 'Drill Rod' on your side of the pond.