Originally Posted by
1kosmos1
Will be brazing reliable for a touring bike?
For example with and without lugs?
Brazing with lugs or fillet brazing with brass has been the standard to make any kind of steel frame including touring bikes for decades. With proper technique your chance of failure is very small. In my opinion it also looks the best.
Don't try and learn on your own if you want to start a business. That method is maybe okay if building a frame is just a hobby and you are the only one going to ride the bicycle. However as soon as you sell a product to someone else you have to make sure that your very 1st sale represents a high standard of quality that years later you will not be ashamed it still exists. And you have to be positive it will not break. Mistakes like designing the frame wrong can ruin your reputation which is very hard to correct.