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I didn’t really have too firm of a plan to deviate from when I started building my last one!
I knew where I wanted the bb height to be (for track legality) and I had planned what my seat and head angles would be and in the end yeah, I was a degree or so out on each. I thought I’d been paying too much attention to keeping the tubes at 90deg to bb shell across the way and had let them ‘pull’ slightly within the lug in a front to back direction.
I found the thread btw, it was Skant’s build for his aunty so I’ve asked him.
Might also be worth noting that I did one joint at a time as that was what the 2 books I had suggested but at the time I didn’t think about how they were really talking about lugged construction and I was just using them as a rough guide, I took the order I did the joints in from them for example.
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M_V
Maybe you didn't get it on your frame but even with lugs on mine, I did one joint at a time completely and when I came to join the top tube to the seat tube, it had moved about an inch too high.
So i guess you just get to hold it all together straight while you braze it up without it moving from heat distortion. I imagine its less of an issue with a jig