How do you build a escape pod on Lego Star Wars 3 on planet quell?

Answer 1

First, you have to build something on each base until you can unlock the escape pod, like for example, after building a shield generator on one base, then you can build a ray shield on the next one

Answer 2

Be sure to have built at least one thing from each category on each base. The last thing to build before you can unlock the ability to build an escape pod is the torpedo generator