I recall Mr. Don Ferris once mentioned*,
*bottom of post #92 , p.5 of Anvil Bikes' Smoked Out.
https://www.velocipedesalon.com/foru...009#post250009

"I make it a point to install any braze-ons BEFORE I miter the tubes if possible and certainly before I install the affected tube in the fixture. Braze-ons will distort the tubing and it can make your life miserable doing it after the frame is built because it can affect your alignment."

This makes a lot of sense. Removal of any stubborn flux or rust from soaking would be a lot easier too, as a more "direct" visual check would be possible, without say an endoscope(!). And any distortion in the tube would affect miters that were done prior to brazing (throwing off alignment).

But (if I'm not mistaken) it seems many builders just add braze-ons at the very end, after the frame is mostly welded(or brazed) together,

Why? Is the affect on alignment so small it is negligible?

Do any of you do braze-ons BEFORE mitering(?), and if you do, can you share any insights regarding;

1. How you straighten tubes if any are slightly affected after braze-ons
2. How you hold(secure) the tubes for mitering, if a braze-on say a cable stop is near the miter point

Pictures of your solutions would be great! Thanks~