I just picked up a 1988 trek 520. I spread the rear triangle to 135 and aligned the frame. Also put a slight crimp in the chainstays to give a tad more clearance. Finally, I moved the brake bosses south by about 5mm to fit 700c wheels. 700x42 gives just enough clearance for a bit of mud or a broken spoke.
Should I add a bunch of braze ons or leave it as is?
I was inspired by u/wormfabrication to have a go at a bilaminate stem. I have a waterford lugged bike that could use modern bars, but a 1" clamp with 31.8mm bars is kind of rare.
I tig welded the lugs because the steerer clamp is the same diameter of the extension so a braze wouldn't be strong enough. I also trust my tig welding more than my fillet brazing.
Lugs could be thinner and shorter, but lately some of the things I've built have been more flexible than I want. Since I have my position dialed it's built so I don't need spacers.
M5 bolts are much less bulky than m6, huge credit to worm for that idea.
Next will probably just be fillet brazed, or half and half. We'll see...