Yes it is for the NiCopp. In the end, it was pretty easy to get close by hand. I tried the hole in a 4x4 method, but found if I took it slow I could get it very very close, then once I get all the clamps, tweak it by hand.
Although, I ran two short pieces on the frame, 30-36 inches, and I rolled those on the garage floor like you would making dough into long bread sticks, and it straightened out quickly.
I am not sure I like NiCopp though, it was almost too soft for me. However, on a good note, it did allow some forgiveness to bend back if you screwed up, more than aluminum, and it flared like soft butter LOL