RE: Stupid question
My way is to trace the parts using tracing paper ( greaseproof food paper ) pinned over the plan using a pencil and a ruler for all straight lines. Then I stick the paper to wood using small pieces of double sided tape. Then I cut right through the paper into the wood with a scalpel, again using a ruler on straight edges. On balsa or light ply up to 1/8 the cut can be made with several passes of a scalpel or a Stanley knife for ply or thicker balsa . The markings can be enhanced by running a very sharp pencil along the grooves for cutting with a fretsaw.