Do you use frames in the boxes, when vacuming?
How does it work. ie. dead bees?
Works well for me and for others from the feedback.
Does it need to have a slanted bottom?
probably not, but just like with cars, it is not the high speed that kills, it is the sudden stop.
Thanks this is exactly what i was thinking about building and am wondering how it is working.
Check the comments -> http://robo.bushkillfarms.com/beekeeping/bee-vac/
I also believe some have left postivie comments in threads here on the forum if you search.