Z-stepper heat shroud

This is a heat shroud I planned for heated build chamber use. The part is designed for a CR-10 Z-stepper with 2040 frame, other printer with similar construction may fit the part too. The idea is not as much to actively cool the motor as to provide low temp environment, as Z-steppers aren't highly stressed. The exhaust channels are angled downwards to minimize draft on the print bed. There are three variants; one with exhaust ducts on either side, one with a duct on one side (use mirror in slice