Well, You can Slice them with a Heat knife, but you have to be really careful about keeping the temp perfect. I know of some who use a sawblade to slice thru slices, again, have to watch the temp. There is a moldmaker who makes slice molds (www.rosescandles.com) and (www.scottcrew.com) I've tried using all of these methods and the one thing they have in common is that since the Gel wax remains exposed, in unvariably "leaks" as is the tendency of Gel wax when not contained. Since you don't actually Melt gel, only heat it to change it's viscosity to something pourable, when it left uncontained in a warm environment, like a home.. it will have a more tendancy to run. SO what looks great on Day 1 will not be the same on Day 30.