Solar parabolic cooker with the mechanical mathematician!

Step 3 Add the glue and glue down

each segment was 1 ft wide so I put 1ft kitchen foil across each segment and glued it.
The glue mix was half elmirs glue and half water, mixed well and smeared lightly across the cardboard. I used a sponge to smooth on the foil. You start in the middle of a foil piece and sponge to the edges. It works well!