. . . can sometimes be measured in millimeters.
I bought the lovely, collapsible wood bow saw on the bottom from the Ray Mears Woodlore shop in England some years ago. Made for Mears by a local bowyer, it quickly became a favorite—so much so that last year I decided to buy another as an extra. However, the product had disappeared from the site.
A quick search located a seemingly identical product from another English online shop, so I ordered that one, and then set it aside for over a year. A few months back, however, I thought I’d try it out to compare to the “original.”
And . . . it compared poorly. In fact, no matter how much twisting I applied to the “Spanish windlass” tensioning mechanism, the blade torqued and bound maddeningly in every cut. A brief side-by-side comparison revealed why: The crossbar on the new saw was positioned significantly higher than on the Woodlore model, vastly reducing leverage and the resulting tension applied to the blade by the windlass.
Theoretically, the copy should be able to saw through a thicker log, given the extra clearance above the blade; in reality this is a moot point since the thing can barely get through any log.
At some point I might try to modify the new saw by drilling and chiseling a new mortise for the crossbar lower on the frame, but for now it sits idle.
If you’re intrigued by the beauty and efficiency of the Woodlore saw, I did find another here that appears to be constructed properly, and an even more beautiful model here.