"somewhat easily" ? Well if a person is proficient in a lot if metal working techniques and has all the proper tools and buys the metal, maybe. Cutting/splicing in a donor window surround is easier but that's not "somewhat easy" either. Your explanation shows you know what to do but is not enough for someone who has never done shrinking and stretching and bending and folding and contraction methods and making hammer forms. Donor use requires a lot of measuring, straight forward cutting and welding. Also donor method: as I said, %100 assurance window will fit. Fab method: 0% assurance.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn