At my age, threading a fly onto a tippet in low light conditions, without magnification, is an exercise in frustration. A few high end gadgets are on the market to help with that - magnetic fly threaders - but they are prohibitively expensive, and the concept behind them is simple enough that I reckoned I could make one myself. They are nothing more than a solid base with a groove, a tiny dimple in that groove at one end, to position the eye of the hook, and a small rare earth magnet embedded in the base, just below that dimple, to (sort of) keep the fly attached to the tool, and positioned so that the hole in the eye is aligned with the groove. Once attached, you use the groove to guide the end of your tippet towards, and hopefully right through the eye of the hook - if the eye is free of crowding materials or varnish, this should work relatively painlessly. Most available fly threaders are made either from aluminium or high density resin (some are even 3D-printed) but since I don’t h...