Tom, I sometimes use vaseline on the frame runners of my brood boxes when I'm setting up a new hive or changing boxes over in the spring. It helps to reduce jerky movements esp. if the runners are made of timber. I just use a light smear so as to reduce friction when sliding frames. Keep it well away from the frame lugs or else it makes holding the frames by the lug too slippy. If you want to you can smear some around the edges of the crown board or excluder to reduce attachment but again too much will make to frame lugs too slippy to hold. By the way, did you manage to get hold of WBC/CDB plans ?. If you are still looking i may be able to get you some if you e-mail me direct. Have you been getting much honey? Dr. Philip Earle N. Ireland [log in to unmask]