It's reassuring to know that people are watching.
Now, to go back to my question. If I use single tooth cutters I will need to buy several to cover the range of sizes. If I use a hob, one size will cut all of the range of gears required. But, the hob is cutting more than one tooth at a time. Will the half HP motor on my mill have enough power to drive a hob?
Yes, I have considered making the cutter, in fact I would prefer to, but the cost of the materials makes it hardly worthwhile. One mistake, and I do make them, would make it cheaper to buy the ready made cutter in the first place.