Originally Posted by meech151

OK, fair enough. So if you exclude Fillet Pro, tig welders can tig it and fillet-brazers can use their brass, was there an intended method for joining these thin- walled tubes by the producers of them and just because they are thin-walled does this mean there lifespan is limited no matter how they are joined. If they are joined correctly and the rider weight limit is in effect why wouldn't the frame last? The S3 stuff rides pretty good. My road bike is all S3 and a buddy of mine is riding the first S3 cross frame that I built with no issues yet and he abuses it, granted hes only 140lbs and has only a little over a year on it. I guess I just don't want to believe that the frames I built out of thin-walled tubes are destined to fail.