I have posted about this hacksaw before during a workshop with the Nevada WoodChucks, and thought I would post the original influence. Charles Plummier’s L’art de Tourner published in 1749, this is a photograph of an original edition in the collection of Ray Wilson of Indianapolis. I shot the photograph in 1977.
I have made and sold several of these including a couple of replacement arms, it is remarkably easy to break the end by overtightening the tension. An iron version would not have this problem. Very handy tool which I find I use on a regular basis.
I used the shape of the iron version on the upper left as I liked the looks of the arms, the wooden version is on the upper right. Did you know the paint on hacksaw blades is actually a lubricant?