As a new builder I get most all my knowledge either through trial and error or asking guys like yourself who have more experience. I have built 3-4 frames out of TT S3 luckily without issue yet, I only do fillet brazing, so if we have these thin walled tubes produced and sold that are clearly not for lugs how else can you join them other than fillet-braze with brass? I am not a tig-welder but I have been told that trying to tig this thin stuff is almost impossible and I would think it would damage the tube way more than brass. Also, I have heard of Fillet Pro although I haven't used it but it hasn't been around for as long as the ultra-thin tubing has it? I guess my question is how did the producers of these super-thin tubes intend for us to join them if they aren't made for lugs? Are the S3 frames that I've built just living with a limited lifespan because they are 6/4/6, are they gonna fail just for that reason? I can understand they may fail if they were joined improperly, overheating, etc. but are they gonna fail just because they are thin wall?

Oh yeah, and those are some big girls you're hanging out with Peter Pan.