I've been doing this for over a year now, wouldn't go back to the old way for love or money! My normal batch of soap is 3.5# oils, so I weigh out 35# into a 5 gallon stock pot, heat slowly until butters are melted, stick blend, weigh out 3.5# into plastic containers with lids. When I want to make soap I just grab a container off the shelf, microwave until melted. I also use pre-mixed lye. I make it up by the gallon. With this method I can make a batch of soap in 15 minute start to finish, including cleanup:D