I re-profiled the spine to fix the problem I had with the tip having no steel. I also tempered it again at 425F, thanks to the advice of bladesmith George Ezell who warned me that the file steel may chip at the previous tempering temperature of 360F. The transition between the steel and the wrought iron is now very apparent. At this stage, it's time for polishing and handle-making. I can't wait to finish it.