Has anyone tried expanding aluminum tube?

Trying to stretch 3" OD to 3.3" OD 6160 0.125" wall

I have enough to make a few mistakes, I was going to try stopping by a muffler shop and have them try an exhaust pipe expander.

 

Anneal it with a torch to an 0 temper. You can usually expand aluminum 0.25" inch on the OD. It's going to be dicey to go to 0.33".

 

How do you do that?

 

I've flared aluminum tube from 3" to 4". a little heat

 

6160-6 that I have has a streching limit of about 10%, I'll try to anneal it and take it and have it streched.

 

what type of expander is suitable for this job? will this work, trying to expand IC inlet from 2.75"-3" will this work? http://www.ebay.com/itm/370605147221...84.m1423.l2649

I know you guys hate old threads being revived, but why start a new thread to ask an old question?

 

it will works good with aluminium, ive seen people using that for steel and really is a pain, to hard to expand using that manual expander, i'd recommend to use a machined die...