[TheForge] Sheet metal bender

[Daniel Kretchmar]

Greetings,
           I need 12" diameter chimmey pipe for my new side draft hood.  I 
looked into menards.  They have galvanized 12"  24 gauge chimney.  I looked 
into having some custom stuff made but it's too costly.....so the next 
question is.....can I make it myself?

What kind of bender would I need to make 12" diameter pipe/tubing out of 24 
gauge stainless steel?  I want to make it in 2 ft sections. which means 
investing in a crimper a bender.....and what about elbows?  I'll need two 90 
degree elbows.  How will I make them?

Advice is appreciated

Dan