Hi All Regardless of the substrate, when the bees build cells they will aim to use worker or drone sizes according to their need. If we give them a pattern to work to (foundation) it is easier for the bees to adopt this cellsize than to modify the pattern to a size that would suit them better. Best Regards, Dave Cushman G8MZY Email: [log in to unmask] Website...Beekeeping and Bee Breeding http://website.lineone.net/~dave.cushman ----- Original Message ----- From: William Morong <[log in to unmask]> One was ordinary 1/8 inch wire mesh. The bees like it fine but > often draw comb upon it. What is > amazing is that the comb drawn is sometimes worker size. What would induce > the bees to do such a thing. >