Lens hood for a 49 mm filter mount (PENTACON 1.8 / 50 mm)

I designed a lens hood for my old Penacon 1.8 / 50 mm lens. I designed the hood around the filter mount of the lens (M49 x 0.75). It fits nice and snug.
Its a little difficult to set the correct print settings.

A Live view can be found here: https://a360.co/2GDeXW4