Bb-Downtube Great resource. Bicycle frame building has a reputation as being an arcane art; something that’s practiced by wizened old Jedi masters, or else carried out by huge, complicated robots in Taiwan, attended by a small army of engineers, technicians, and metallurgists. This isn’t so. Frame building is a craft like any other, with simple, consistent rules that mere mortals can master fairly easily, given sufficient attention to detail and care. [via] Link.