I checked all areas on these Mk IX irons with a few file strokes to confirm there were no hard spots. They appear to be tempered to a nice spring grade.

The square hole is 1/2″ X 5/8″. It is intended to anchor a tension strap made of Dacron strands. Not only will this new arrangement be lighter, the strap should also be stronger. While it is true the previous strap was made from kevlar, it is also true that it was in the form of webbing. I imagine webbing to be less strong of a format because so many of its fibers run crosswise to the strain. Our new attempt will have all the fibers running lengthwise. And quite incidentally, their whitey/yellowish colour will do a fair job of mimicking sinew.

Not that we care about that, right?

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