>>1561197
No, I literally mean you can grind it on a lathe and if you have to do more than that you've seriously fucked up somewhere. You don't want to be clearing mm of material off the OD on one side. You can get an accurate centering and keep the thing round which you can't do so much grinding one side at a time. Again, the problems aren't going to originate from the stator if you're doing bldc or similar, it's much more likely the rotor because one of the permanent magnets is slightly proud for some reason. In that case you want the stator to be ground so that it's barely clearing the proudest permanent magnet. On that point, that's something that you can solve earlier on in design in handmade processes, so that it's less of a problem.
>And I've worked for motor manufacturers and they don't turn the slotted side on a lathe
Most of my motors are Chinese imports one way or another, there's a lot of variation in motor manufacturing in the west and some places are really great, others are terrible. If you have knowledge to pass that's great.
>If you think it's realistic to cut hundreds of these to make a toy motor, then go for it.
It's like 1ish hrs of work roughly when you've set everything up. It's not something to build a business plan around, but it's prefectly doable as a hobby in a garage with fairly basic tools if OP is that way inclined. Listen to a podcast and go zen or whatever. You'll have to treat it like meditation because you also have to build the thing afterwards and wind the coils, all of which are fairly repetitive, long and boring.
I wouldn't bother, personally, unless you feel you'll really learn something or you have some genius new design, or you need a totally bespoke motor and no other motor or motor like shell (so alternators or similar) fits.