The Base Adapter is used to make guided cuts with the Festool Carvex Jig Saws. For precise, straight cuts, the Base Adapter slides on any of the Festool Guide Rails. Guide Rail cuts work best with Festool FSG blades like the S75/4 FSG, S105/4 FSG or S 145/4 FSG .
For circles or arcs, the base adapter is used with the Circle Cutter.
