RE: Cutting slots in plywood
I have cut slots in both wood working projects and airplane parts by drawing the slot outline on part, drilling a hole smaller than width of slot in each end, keeping the bit inside the line- cut out inside the line with a scroll saw using a wide blade and finish with a small flat file for edges and round file for the rounded ends. Works for me-nice straight slots-just take your time. ( I get in trouble borrowing emery boards)