I need to make several hundred handles for the stoppers in organ pipes. These will be glued to the stopper using a round tenon, 1/4 to 1/2" diameter, depending on the size of the stopper. I can turn them on my wood lathe, but getting a good fit requires time and attention. I'm wondering if there is a good tenon cutter I can use, preferably on the lathe, to quickly make an accurately sized tenon up to 3/4" long in that size range. Ideally it would leave a square corner so that the handles will sit down flush without further trimming. I see much larger ones for rustic furniture making from companies like Lee Valley, but they are too big and won't leave a square corner.
Here's a picture of some shapes I've been playing with:
IMG_6412.jpeg
(posting in the general form rather than turning because I thought this is the sort of thing that people making things like square balusters might use)