Originally Posted by
Singlespd
I guess we should ask the OP if the guy who welded it knew how to fix bike frames and
- did he drill the crack on both ends to keep the material from cracking more.
- Did he then grind a valley along the crack for the filler rod to pool and penetrate
- and did the welder use the correct filler rod for the type of aluminum used in the frame?
- Was it heat treated? We dont know.
If everything was done correctly then I dont see any reason why it cant be ground down. Its up to the OP to decide if he want to take a chance
You have never welded any aluminum and you didn't read enough of the books.
1. valid
2. frame tubing is only 0.085", not much to grind
3. if you want do to 4. then 4043 is pretty much your only choice
4.
I know. And you could also know if you read the books. Heat treatment for T6 is one hour at 980F and another one at 500F.
How will the paint look after that?
Exactly!
It's up to you to learn the lesson and to stop giving dangerous advice.