Mine is really simple, a big piece of cold rolled with a slot in it, a steerer held by the starnut and an interchangeable habdlebar dummy. I braze the clamp bolts first and use them to hold the clamps and add the main tube. The stem helps build itself in a way haha. Since its all massive and milled its pretty straight, the only thing i have to measure is the position of the handlebar clamp on the dummy but it takes a minute on the aligment table
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