Hello Frank - I cut two 3/4 inch communication holes one inch from the bottom and one inch from the sides. The bees left these open and did not enlarge them. Larry > > > > Have heard a similar comment from another beekeeper concerning plastic > > frames, but they were not peirco. I have ordered some peirco > foundation to > use in frames with grooved top and bottom bars. Am planning to cut a > triangular piece out of each corner. *Where in the frame did you cut > the > communication holes and how big? > thanks in advance, Frank. > > Frank Farrell > Darwin NT > Australia > [log in to unmask]