i can't say that i make my reeds by "hand", but i make my own reeds. and yes, i played oboe/english horn for 25 years, before i realized that it was teaching me not to breathe. now i play trombone, tuba, flutes and soprano sax, with a dead bari, slowly coming back to life.
i got into it carving the reeds that fought back too hard, straight out of the box. i started by using my doublereeds reed knife but quickly realized i needed something else, on a single reed. now i use a very slightly modified trim router with a die grinder round stone burr, to make my initial cuts, down the sides. from there i use a die grinder cylindrical stone burr in a handle, to clean up the transition between the scalloped edges, i cut with the router, and the factory tip.
what my reeds look like is what a single blade of an american cut doublereed would look like if flattened. the flat cuts of the doublereed become scalloped cuts on the single reed.
these days i recut all of my reeds, straight out of the box. i prefer my recut reeds. they play better. i am totally surprised by the occasional reed that doesn't play great. and i like my tone.
i've tried twice to interest a reed manufacturer in trying some samples, for free, but they evidently can't be bothered. i'm a retired electrical engineer. it's not as if i'm going to go into the reed business, to compete with them. but it's disheartening to think that what i've come up with will never help anyone else to play easily and with nice tone.
i even tried a reed straight out of the box, today. it played all right. but it took so much work to get it to play that my embouchure was shot in half an hour. i usually practice about three hours; one of the benefits of being retired.