Final answer:
To make interior cuts on a scroll saw, you fold the paper, cut along the curved line, score and fold the gnomon sheet, and then slide the fin into the cut made on the base sheet.
Step-by-step explanation:
Process for Making Interior Cuts on the Scroll Saw:
Start by folding the page in its middle and cut along the curved line.
Next, score the two secondary lines and fold the gnomon sheet along them.
In the previous step, you separated the fin of the gnomon from two pieces. Fold those pieces and place them flat on the table.
Take the base sheet and cut it along its middle line, up to the small cross-line marked. Do not cut any further.
Slide the fin into the cut you made, so that all horizontal parts of the first sheet are below the base sheet, and only the fin sticks out.