How about some perspective here.
Every now and then someone will post up a build thread for their new buggy/heep/toy/whatever. Someone will notice that they have the frame mounts for their suspension links mounted in single shear.
The masses will pile in telling them that the mounts will fail, they aren't designed right, and that single shear is weaker.
Suggestions will be made on how to change them easily to a much better double shear mount.
The origional poster will argue that his last ride had the link mounts in single shear and never had a problem, his buddy ran this setup without problem, and how strong he made the mounts to make up for what must be an inferior design.
More folks will join in the arguement stating past experiences, basic engineering practices, common sense, and may even throw some numbers out there for shear strength of the fasteners.
The origional poster gives in, redesignes his mounts to be a double shear setup, and posts up the pics.
Everyone involved in the thread tells him what a good decision he made, and pats themselves on the back from saving the poor guy from disaster.
I'm sure we've all seen threads exactly like what I just wrote, they aren't that uncommon on the board.
Now replace single shear with "tack tack tack" and double shear with "continuous weld", its the same arguement, different topic, but it fits the outline to a T. You're arguing to support a practice that goes against what every professional welder is taught because it works for you/your buddy/whatever, so it must be right and the entire welding industry is wrong.
