"Great stuff, thank you! In my toying around over the years (we're talking a few lamps, not 100s!), if soap can be used as surf, that the soap would make the lava more stringy and less soap more ball like. Huh, that changes things if…"
Hey, two ways I have tried and I think most people here are choosing are:1) pouring the liquid (cold) into a the bottle of choice and pouring the molten wax into a a container of choice,then cut the wax into pieces and drop them into the cold liquid. done.
2) (which is how I always do it) Pour liquid into the desired bottle while cold (I live in germany which means its usually not as hot as in the states for example, depending on where you live you might wanne cool the liquid down to about 15 degrees celsius) then pour hot wax directly into the liquid while keeping a steady uniform flow from beginning to end so the wax only hits the fluid and not the glass. in case some wax did come in contact with the glass anyway pour some very hot water (I use water right below boiling point and pre heat the bottle with hot tap water sonit doesnt crack) ovet the bottle and it will get come off). Put the bottle which probly looks like a mess now on a base and run it and it will accumulate again and look almost like before. there are probly be many small bubbles of fluid in the wax but they will disappear completely after two or three runs. now done