Join Date: Jan 2006
Location: Bismarck, ND
Bikes: Modified Burley Koosah, Trek Navigater folding, downtube folding
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'd go with the TIG. There are Mig aluminum welders, but in my opinion they are not very suitable for bike frames/aluminum tubing. The TIG machine has a longer steeper learning curve but is worth learning "how to" in the end.
Otherwise, with a decent MIG wire feed, and lacking a TIG machine and knowhow, you could tack it together, then take it to a good TIG welder somewhere for final welding.