How to design a single layer pcb for manufacturing?

Hi

Depending on the size if your board, your reasoning is just nonsensical these days.
100mm x 100mm board from China are, circa, $2 for 5 units. If yoh dont mind waiting you can get delivery for inder $5.

Anyway, temember Google is your friend (hint hint)

Found the dollowing lonk.whuch should get you stated