Well, that’s not exactly it but it was the closest analogy I could think of. I was hoping to build an amateur de-lousing chamber for a home mycology kit. The idea is that the tube would be vertical, implanted in the lid of a bucket, and the hobbyist could drop their mycelium chunks into the top of the tube, with the bottom door closed.
Then some UV lights can come on, disinfect the air and mycelium, and then the hobbyist could push a button to open the bottom door and let the mycelium fall into the substrate in the bucket. It’s possible that a non-round tube would be a lot more difficult to work with in terms of putting it through a bucket lid. Here’s a very amateur design.
