Amana Tool 55340 Carbide Tipped Reversible Ogee Window Sash & Rail 1/8 Radius x 1-9/64 Dia x 43/64 x 1/2 Inch Shank with Center Ball Bearing jigsaws You can use the cutters

You can use the cutters individually on the arbor

and a selection of washers

combined with the cleverly designed resonance chamber

forming an exact duplicate of the template

a tool free multi base system

Amana Tool 55340 Carbide Tipped Reversible Ogee Window Sash & Rail 1/8 Radius x 1-9/64 Dia x 43/64 x 1/2 Inch Shank with Center Ball Bearing jigsaws You can use the cuttersThis reversible assembly is designed to cut window sash and glass door parts, including rails, stiles, mullions, and muntins, on stock between 1 1 8" and 1 3 4" thick. Assembly includes an ogee profile cutter, a rabbet cutter, one bearing, a 1 2" shank arbor, spacers, shims, and washers. Configure as shown in the drawing to cut profile and rabbet on all parts. Switch bearing and profile cutter and replace rabbet cutter with spacers to rout the copes.