If you don't want to use a potato you could cut your design out of foamboard like this and then stick it onto another piece of foam board to make your printing plate. OK. Now for the messy bit.

Foam boards, known for their versatility and practicality, now come in eco-friendly options that cater to both businesses and creative individuals.

If you’re moving beyond foam board wings, 3D printing is an excellent way to create an accurate airfoil, and [Tom Stanton] provides us with an excellent guide to modeling wing sections for easy ...