I'm trying to model a frame that has a seat tube gusset. Since there is no specific way to do this, I used a curved top tube to mdel the gusset and a top tube attached seat stay with a double curve (one that is the real curve, the second is to "prolong" the top tube to it's rightful place. However, this produces some visual artifacts. Am I doing something wrong?
See model here : http://www.bikecad.ca/1361800876450