With the lid closed, another hole was drilled to lock the lid closed. This pin would a slip pin that could be removed as required. An old frame was used to see how well the cage could be located. Some of the comb was cutout with a sharp knife and then the top wire was snipped to allow the cage to be inserted. If this system works effectively, the top wire won?t be inserted into future brood frames. As we won?t be allowed to move brood frames into honey supers when varroa hits, this won?t be an issue.