I made a wood jig for making the flange.
Started to hammer the flange with very little succes 
A few minutes later and after annealing the copper the pipe is forming like some modeling clay
I measured 300mm from the top for the condenser and taped the 2" template on the pipe
note that i didn't have clear tape so i used a brown one. The lines were still visible 
The job was very easy with a hack saw 
and the result 
With a little filing the slant plates will fit snuggly
I will return with more pics when i will get the solder and the tubing for the condenser.
LE: I had some problems with the pictures host. I hope now it works.