Originally Posted by
MassiveD
On the BS thing, there is a perfectly reasonable discussion of butts up there, and you do have to have some minimal clue, or a competent supplier, before you order. But once you have the tubes, you can just measure the butts. You don't really need any fancy equipment to do it. So rather than a million posts and opinions, make a drawing, use real parts for your info, and you will find it all falls in place.
This is exactly what i do. Measure where the butts are (butt i do use a fancy tool), line the tube up on my plans WRT the butts then cut and miter to fit. If you've taken the care to get tubes with well arranged butts you'll have no problem mitering within the thicker ends. However when making an odd frame, like the S&S coupled one I've just started up, some playing is needed. Live using an OS top tube for the DT. Andy.