Just hand pressing of the comb sheet is a crude way to do it. Probably work with a very mild application of current so you have more feel and observation of the progress. You need to make yourself an embedding wand that has multiple pressure fingers. I will see if I can dig up some of my pics and will post them. It is much more effective if you can bed approx to middle of sheet and not leave any holes. Holes are an invitation to drone brood!