Three types of wax refills for your studio projects: sticky wax (temporary hold), build-up wax (filler), and extra hold build-up wax (fast-drying, carvable).
Use Sticky Wax when pre-positioning parts on your model for a temporary hold. This wax is soft and pliable, just like playdough.
Use Build Up wax to fill areas with wax where the surface is needed.
Use Build Up Extra Hold wax to fill areas with wax if you need to carve/manipulate the surface later.