Prints no supports.
I recommend using black pla.
Check it for light leaks, use a flash light in a dark room to inspect it. This light leak can be desirable if you're going for a certain look. Up to you!
I printed at .2 with a .4 nozzle with success.
The author remixed this model.
I have several enlarger lenses that are m25 mount and I could not locate anything that allowed me adapt these lenses to my camera.
I tested this out with my Fuji xt 2 with the Fuji to Nikon adapter and then used the helicoid and with the 50mm it's incredible for scanning film.
I know there's got to be other people out there looking for this, so I figured I'd share.