It never really occurred to me that there may be an alternative to the bee crushing that inevitably (well,
almost) happens when replacing frames.
I saw recently a hive that had a bit of perspex sitting maybe 1/2" above and along the length the rabbet for this purpose
(allowing a space for the bees to go when the frame is put in).
I use a router for doing my rabbets, and thought perhaps I could use a bit similar to this http://www.newwoodworker.com/reviews/graphics/photos/tools/rcklredgbitsrvu/setinnie300.jpg
It seems it might also your fingers to get a better purchase on the frame.
Does anyone else do something similar ?