Oh, wow, stained and art glass? That really does sound really interesting! Not to worry, no matter what, every job has its tediousness and boredom. The question is, do you enjoy your job in general?
You'd hate my job. There are times I have to work in the mycology lab and I have to grow fungus, pick it (with implements, not my hands), prep it on a slide, and test it for just what fungus it might be. I don't know if you could survive a "lid-lifter;" a fungus that grows rapidly and literally expands to the point to lift the lid of the agar plate. To add to the icky icky factor, I work in a clinical lab and nearly all the fungi, molds, and yeasts are from human sources (body fluids, skin, internal organs, etc). As for mushrooms, I avoid them like the plague. Growing mushrooms outside are no problem, but I just have a hard time even imagining ingesting them. Blech.
But I'm mortified of the dread, evil hypodermic needle. A doctor mentions blood letting or an injection of some sort and I break out instantly in an ice cold sweat. Math has much the same effect on me. Numbers and I are incompatible and are not on speaking terms. I can manage geometry if I work at it very hard but not much else.